diff --git a/Example_usage_of_the_Base_Ontology_-_combinig_SAREF_and_BO/.gitkeep b/Example_usage_of_the_Base_Ontology_-_combinig_SAREF_and_BO/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/Example_usage_of_the_Base_Ontology_-_combinig_SAREF_and_BO/BO_SAREF.owl b/Example_usage_of_the_Base_Ontology_-_combinig_SAREF_and_BO/BO_SAREF.owl
new file mode 100644
index 0000000000000000000000000000000000000000..45b8016bf4f83a95573212ca32e76d3020038993
--- /dev/null
+++ b/Example_usage_of_the_Base_Ontology_-_combinig_SAREF_and_BO/BO_SAREF.owl
@@ -0,0 +1,418 @@
+<?xml version="1.0"?>
+<rdf:RDF xmlns="https://git.onem2m.org/MAS/BaseOntology/raw/master/BO_SAREF.owl#"
+     xml:base="https://git.onem2m.org/MAS/BaseOntology/raw/master/BO_SAREF.owl"
+     xmlns:B_O="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#"
+     xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+     xmlns:terms="http://purl.org/dc/terms/"
+     xmlns:owl="http://www.w3.org/2002/07/owl#"
+     xmlns:bo_saref="https://git.onem2m.org/MAS/BaseOntology/raw/master/BO_SAREF.owl#"
+     xmlns:xml="http://www.w3.org/XML/1998/namespace"
+     xmlns:saref="https://w3id.org/saref#"
+     xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
+     xmlns:skos="http://www.w3.org/2004/02/skos/core#"
+     xmlns:base_ontology="https://git.onem2m.org/MAS/BaseOntology/raw/3_6_0/base_ontology.owl#"
+     xmlns:time="http://www.w3.org/2006/time#"
+     xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
+    <owl:Ontology rdf:about="https://git.onem2m.org/MAS/BaseOntology/raw/master/BO_SAREF.owl">
+        <owl:imports rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/3_6_0/base_ontology.owl"/>
+        <owl:imports rdf:resource="https://w3id.org/saref"/>
+    </owl:Ontology>
+    
+
+
+    <!-- 
+    ///////////////////////////////////////////////////////////////////////////////////////
+    //
+    // Object Properties
+    //
+    ///////////////////////////////////////////////////////////////////////////////////////
+     -->
+
+    
+
+
+    <!-- https://w3id.org/saref#IsUsedFor -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#IsUsedFor">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#accomplishes -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#accomplishes">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#actsUpon -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#actsUpon">
+        <rdfs:subPropertyOf>
+            <rdf:Description>
+                <owl:inverseOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#exposesCommand"/>
+            </rdf:Description>
+        </rdfs:subPropertyOf>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#contains -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#contains">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingRelation"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasCategory -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasCategory">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasCommand -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasCommand">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasCommand"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasConsumption -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasConsumption">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasFunction -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasFunction">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasFunction"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasInputParameter -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasInputParameter">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasInputDataPoint"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasOutputParameter -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasOutputParameter">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasOutputDataPoint"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasPrice -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasPrice">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasProduction -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasProduction">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasProfile -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasProfile">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasState -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasState">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasTime -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasTime">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasTypicalConsumption -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasTypicalConsumption">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#isAccomplishedBy -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#isAccomplishedBy">
+        <rdfs:subPropertyOf>
+            <rdf:Description>
+                <owl:inverseOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+            </rdf:Description>
+        </rdfs:subPropertyOf>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#isCategoryOf -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#isCategoryOf">
+        <rdfs:subPropertyOf>
+            <rdf:Description>
+                <owl:inverseOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingProperty"/>
+            </rdf:Description>
+        </rdfs:subPropertyOf>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#isCommandOf -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#isCommandOf">
+        <rdfs:subPropertyOf>
+            <rdf:Description>
+                <owl:inverseOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasCommand"/>
+            </rdf:Description>
+        </rdfs:subPropertyOf>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#isLocatedIn -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#isLocatedIn">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingRelation"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#isMeasuredIn -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#isMeasuredIn">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#describes"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#isOfferedBy -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#isOfferedBy">
+        <rdfs:subPropertyOf>
+            <rdf:Description>
+                <owl:inverseOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasService"/>
+            </rdf:Description>
+        </rdfs:subPropertyOf>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#offers -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#offers">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasService"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#represents -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#represents">
+        <rdfs:subPropertyOf>
+            <rdf:Description>
+                <owl:inverseOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#exposesFunction"/>
+            </rdf:Description>
+        </rdfs:subPropertyOf>
+    </rdf:Description>
+    
+
+
+    <!-- 
+    ///////////////////////////////////////////////////////////////////////////////////////
+    //
+    // Data properties
+    //
+    ///////////////////////////////////////////////////////////////////////////////////////
+     -->
+
+    
+
+
+    <!-- https://w3id.org/saref#hasDescription -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasDescription">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingAnnotation"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasManufacturer -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasManufacturer">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingAnnotation"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasModel -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasModel">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingAnnotation"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#hasSpaceType -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#hasSpaceType">
+        <rdfs:subPropertyOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#hasThingAnnotation"/>
+    </rdf:Description>
+    
+
+
+    <!-- 
+    ///////////////////////////////////////////////////////////////////////////////////////
+    //
+    // Classes
+    //
+    ///////////////////////////////////////////////////////////////////////////////////////
+     -->
+
+    
+
+
+    <!-- https://w3id.org/saref#BuildingObject -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#BuildingObject">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#ThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#BuildingSpace -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#BuildingSpace">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#Thing"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#Command -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#Command">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#Command"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#Commodity -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#Commodity">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#ThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#Device -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#Device">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#Device"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#DeviceCategory -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#DeviceCategory">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#ThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#Function -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#Function">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#Function"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#FunctionCategory -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#FunctionCategory">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#Aspect"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#Profile -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#Profile">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#Thing"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#Property -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#Property">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#Variable"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#Service -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#Service">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#Service"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#State -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#State">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#Variable"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#Task -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#Task">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#ThingProperty"/>
+    </rdf:Description>
+    
+
+
+    <!-- https://w3id.org/saref#UnitOfMeasure -->
+
+    <rdf:Description rdf:about="https://w3id.org/saref#UnitOfMeasure">
+        <rdfs:subClassOf rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/master/base_ontology.owl#MetaData"/>
+    </rdf:Description>
+</rdf:RDF>
+
+
+
+<!-- Generated by the OWL API (version 4.2.6.20160910-2108) https://github.com/owlcs/owlapi -->
+
diff --git a/README_Base_Ontology_SAREF.md b/README_Base_Ontology_SAREF.md
new file mode 100644
index 0000000000000000000000000000000000000000..eb682bfb0bb6079e5598b828c6621fa31559a635
--- /dev/null
+++ b/README_Base_Ontology_SAREF.md
@@ -0,0 +1,133 @@
+About the file: BO_SAREF.owl
+==============
+
+After the Release 3 version of the oneM2M base ontology (version 3.6.0) had been finalized in TS-0012, the BO_SAREF.owl file in this directory gives an example how it can be used in practice. As a natural candidate for that exercise SAREF (Smart Appliances Reference Ontology) has been chosen. 
+The attached BO_SAREF.owl file imports both ontologies through reference: 
+
+    <owl:Ontology rdf:about="https://git.onem2m.org/MAS/BaseOntology/raw/master/BO_SAREF.owl">
+        <owl:imports rdf:resource="https://git.onem2m.org/MAS/BaseOntology/raw/3_6_0/base_ontology.owl"/>
+        <owl:imports rdf:resource="https://w3id.org/saref"/>
+    </owl:Ontology>
+
+It contains sub-classing and sub-Properties relationships between SAREF and the oneM2M base ontology. By creating this sub-classing and sub-Properties relationships all SAREF classes (and any potential sub-class of SAREF classes) can be istantiated as oneM2M resources, using the instantiation rules in TS-0012 and TS-0030.
+
+Not all classes / properties of SAREF could be described as sub-classes / sub-properties of base ontology (BO) classes / properties.  
+In most cases this is not an issue, since all classes / properties of SAREF indeed can be implemented as RDF data in \<semanticDescriptor\> resources, using the rules of TS-0012.
+However, in oneM2M Solutions, that do not make use of \<semanticDescriptor\> resources, SAREF (or SAREF based) ontologies, devices and their services can still be instantiated with oneM2M resources, using TS-0030 as mapping rule. 
+Devices, Input/output datapoints can be implemented, however some other semantic information might be lost. 
+Problems found, but not yet resolved:
+------------------------------------
+
+A particular problem arose with "saref:Property ". SAREF uses this class sometimes as classification:
+
+
+- Device SubClassOf :IsUsedFor only (:BuildingObject or :Commodity or :Property) 
+
+Where "saref:Property " has sub-classes saref:Energy, saref:humidity, saref:Power, … 
+
+Sometimes SAREF uses this "saref:Property " class as in/output parameters of services. 
+
+
+- saref:Service SubClassOf :hasOutputParameter only (:Property or :State)
+
+This seems to be an inconsistent use of "saref:Property " in SAREF and makes the sub-classing difficult.
+
+
+
+Another problem was found in the oneM2M base ontology (BO) itself:
+The problem relates to the mapping of information contained in instances of "BO:Aspect" (e.g. the quality or kind of a BO:Variable) and " BO:MetaData" (e.g. measurement units) into oneM2M resources (\<container\>s or \<flexContainer\>s). The problem arises only for oneM2M Solutions, that do not make use of \<semanticDescriptor\> resources.
+The input/output parameters of a device (classes BO:Input/OutputDataPoint and BO:OperationInput/Output) and the properties of a thing (class " BO:ThingProperty") are derived from class " BO:Variable". Currently the class " BO:Variable" is related to classes " BO:Aspect" and " BO:MetaData" via relations (i.e. object properties):
+
+- A " BO:Variable" " BO:describes" an " BO:Aspect"
+- A " BO:Variable" " BO:hasMetaData" " BO:MetaData"
+
+"Aspect" and "MetaData" are also related via:
+
+- An " BO:Aspect" " BO:hasMetaData" " BO:MetaData"
+
+	While TS-0030 specifies how input/output parameters of a service of a device are instantiated as customAttributes of \<flexContainer\> service resources of the resource it does not specify how " BO:Aspect" and " BO:MetaData" should be instantiated. 
+
+	According to section 7.1.1.2 of TS-0012 the resource types for instantiating these two should be the \<semanticDescriptors\>s of some \<container\> or \<flexContainer\>. The \<semanticDescriptor\> of the input/output parameters of a service contain the information where the \<semanticDescriptors\>s of " BO:Aspect" and " BO:MetaData" can be found.
+
+	If no \<semanticDescriptors\>s exist " BO:Aspect" and " BO:MetaData" can still be instantiated as \<container\> or \<flexContainer\>, however the linking between input/output parameter " BO:Variables" and related " BO:Aspect" and/or " BO:MetaData" is not specified. 
+This remains to be solved in the future.
+
+The following tables give an overview on sub-classing and sub-Properties relationships contained in BO_SAREF.owl:
+
+
+**Classes:**
+
+
+|SAREF Class|Is subClassOf Base Ontology Class|Comment|
+|-------|-----------|--------------------|
+saref:BuildingObject|BO:ThingProperty|subClass relationship implemented in BO_SAREF
+saref:BuildingSpace|BO:Thing|subClass relationship implemented in BO_SAREF
+saref:Command|BO:Command|subClass relationship implemented in BO_SAREF
+saref:Commodity|BO:ThingProperty|subClass relationship implemented in BO_SAREF
+saref:Device|BO:Device|subClass relationship implemented in BO_SAREF
+saref:DeviceCategory|BO:ThingProperty|subClass relationship implemented in BO_SAREF
+saref:Function|BO:Function|subClass relationship implemented in BO_SAREF
+saref:FunctionCategory|BO:Aspect|subClass relationship implemented in BO_SAREF
+saref:Profile|BO:Thing|subClass relationship implemented in BO_SAREF
+saref:Property| |No subClass relationship implemented in BO_SAREF. -Could be mapped to "BO:Aspect" when used as: saref:SensingFunction SubClassOf saref:hasSensingRange some saref:Property Or mapped to "BO:Variable" when used as: saref:Service SubClassOf saref:has[In/Out]putParameter only (saref:Property or saref:State) Or mapped to "BO:ThingProperty" (i.e. a subclass of "BO:Variable"), when used as: saref:Device SubClassOf saref:IsUsedFor only (saref:BuildingObject or saref:Commodity or saref:Property) Or as: saref:Profile SubClassOf saref:hasProduction only (saref:Energy or saref:Power) and saref:Profile SubClassOf saref:hasConsumption only  (saref:Energy or saref:Power)
+saref:Service|BO:Service|subClass relationship implemented in BO_SAREF
+saref:State|BO:Variable|subClass relationship implemented in BO_SAREF
+saref:Task|BO:ThingProperty|subClass relationship implemented in BO_SAREF
+saref:UnitOfMeasure|BO:MetaData|subClass relationship implemented in BO_SAREF
+
+
+
+
+**Object Properties:**
+
+|SAREF Object Property|Is subPropertyOf Base Ontology Object Property|Comment|
+|---|---|---|
+saref:hasCategory|BO:hasThingProperty|subProperty relationship implemented in BO_SAREF
+saref:accomplishes|BO:hasThingProperty|subProperty relationship implemented in BO_SAREF
+saref:actsUpon|Inverse of: BO:exposesCommand|subProperty relationship implemented in BO_SAREF In BO an Input/OutputDataPoint or an Operation of a Service exposes a Command =\> In SAREF " saref:State " seems to be the counterpart to BO: Input/OutputDataPoint. saref:Command SubClassOf saref:actsUpon only saref:State =\>Note: there exists no concept of an "Operation" in SAREF!
+saref:consistsOf| |No subProperty relationship implemented in BO_SAREF Either "BO:consistsOf "  when used among devices as:  saref:Device SubClassOf saref:consistsOf only saref:Devic Or " BO:hasThingRelation "  when used among Profiles as:  saref:Profile SubClassOf saref:consistsOf only saref:Profile
+saref:contains|BO:hasThingRelation|subProperty relationship implemented in BO_SAREF
+saref:hasCommand|BO:hasCommand|subProperty relationship implemented in BO_SAREF
+saref:hasConsumption|BO:hasThingProperty|subProperty relationship implemented in BO_SAREF
+saref:hasFunction|BO:hasFunction|subProperty relationship implemented in BO_SAREF
+saref:hasInputParameter|BO:hasInputDataPoint|subProperty relationship implemented in BO_SAREF Because saref:Property and saref:State are mapped to BO:Variable (which is parent of BO:InputDataPoint) Note: saref:Service SubClassOf saref:hasInputParameter only (saref:Property or saref:State) =\>Note: there exists no concept of an "Operation" in SAREF!
+saref:hasMeterReadingTime| |No subProperty relationship implemented in BO_SAREF ??? unclear in SAREF ?? This and the next SAREF property defines a relation between a saref:Function and a saref:Property, which is mapped to BO:Variable. saref:MeteringFunction SubClassOf saref:hasMeterReadingTime min 1 saref:Time (which is a saref:Property) In the Base Ontology a BO:Function has BO:Commands but no Variables
+saref:hasMeterReadingValue| |No subProperty relationship implemented in BO_SAREF ??? unclear in SAREF ??? saref:MeteringFunction SubClassOf saref:hasMeterReadingValue only (saref:Commodity or saref:Property) Wouldn't a Function have a Command which would actUpon a state. The state would then have a value and a time
+saref:hasOutputParameter|BO:hasOutputDataPoint|subProperty relationship implemented in BO_SAREF See: saref:hasInputParameter
+saref:hasPrice|BO:hasThingProperty|subProperty relationship implemented in BO_SAREF
+saref:hasProduction|BO:hasThingProperty|subProperty relationship implemented in BO_SAREF
+saref:hasProfile|BO:hasThingRelation|subProperty relationship implemented in BO_SAREF
+saref:hasSensingRange| |No subProperty relationship implemented in BO_SAREF Because mapping of saref:Property is unclear e.g. saref:SensingFunction SubClassOf saref:hasSensingRange some saref:Property
+saref:hasSensingTime| |No subProperty relationship implemented in BO_SAREF Because mapping of saref:Property is unclear
+saref:hasState|BO:hasThingProperty|subProperty relationship implemented in BO_SAREF saref:Device SubClassOf saref:hasState only saref:State  (saref:State is mapped into BO:Variable)
+saref:hasThreshold| |No subProperty relationship implemented in BO_SAREF
+saref:hasTime|BO:hasThingProperty|subProperty relationship implemented in BO_SAREF
+saref:hasTypicalConsumption|BO:hasThingProperty|subProperty relationship implemented in BO_SAREF
+saref:isAccomplishedBy|Inverse of: BO:hasThingProperty|subProperty relationship implemented in BO_SAREF See: saref:accomplishes
+saref:isCategoryOf|Inverse of: BO:hasThingProperty|subProperty relationship implemented in BO_SAREF See: saref:hasCategory
+saref:isCommandOf|Inverse of: BO:hasCommand|subProperty relationship implemented in BO_SAREF See: saref:hasCommand
+saref:isLocatedIn|BO:hasThingRelation|subProperty relationship implemented in BO_SAREF
+saref:isMeasuredIn|BO:describes|subProperty relationship implemented in BO_SAREF
+saref:isOfferedBy|Inverse of: BO:hasService|subProperty relationship implemented in BO_SAREF Inverse of: saref:offers See: saref:offers
+saref:IsUsedFor|BO:hasThingProperty|subProperty relationship implemented in BO_SAREF
+saref:offers|BO:hasService|subProperty relationship implemented in BO_SAREF
+saref:represents|Inverse of:  BO:exposesFunction|subProperty relationship implemented in BO_SAREF
+
+
+
+**Data Properties:**
+
+|SAREF Data Property|Is subPropertyOf Base Ontology Data Property|Comment|
+|---|---|---|
+saref:hasDescription|BO:hasThingAnnotation|subProperty relationship implemented in BO_SAREF
+saref:hasManufacturer|BO:hasThingAnnotation|subProperty relationship implemented in BO_SAREF
+saref:hasMeterReadingType| |No subProperty relationship implemented in BO_SAREF
+saref:hasModel|BO:hasThingAnnotation|subProperty relationship implemented in BO_SAREF
+saref:hasName| |No subProperty relationship implemented in BO_SAREF
+saref:hasSensorType| |No subProperty relationship implemented in BO_SAREF
+saref:hasSpaceType|BO:hasThingAnnotation|subProperty relationship implemented in BO_SAREF
+saref:hasTask| |No subProperty relationship implemented in BO_SAREF
+saref:hasValue| |No subProperty relationship implemented in BO_SAREF
+saref:isFlexible| |No subProperty relationship implemented in BO_SAREF
+saref:isInterruptionPossible| |No subProperty relationship implemented in BO_SAREF
+