import SAREF and don't redefine SAREF terms. closes #21

prov:hadPrimarySource a owl:AnnotationProperty .

saref:Measurement a owl:Class ;

    rdfs:label "Measurement"@en ;

    rdfs:comment "Represents the measured value made over a property. It is also linked to the unit of measure in which the value is expressed and the timestamp of the measurement."@en ;

    rdfs:isDefinedBy "https://saref.etsi.org/core/" ;

    rdfs:subClassOf [ a owl:Restriction ;

            owl:allValuesFrom saref:UnitOfMeasure ;

            owl:onProperty saref:isMeasuredIn ],

        [ a owl:Restriction ;

            owl:allValuesFrom saref:Property ;

            owl:onProperty saref:relatesToProperty ],

        [ a owl:Restriction ;

            owl:onClass saref:UnitOfMeasure ;

            owl:onProperty saref:isMeasuredIn ;

            owl:qualifiedCardinality "1"^^xsd:nonNegativeInteger ],

        [ a owl:Restriction ;

            owl:onClass saref:Property ;

            owl:onProperty saref:relatesToProperty ;

            owl:qualifiedCardinality "1"^^xsd:nonNegativeInteger ],

        [ a owl:Restriction ;

            owl:allValuesFrom xsd:dateTime ;

            owl:onProperty saref:hasTimestamp ] ;

    owl:disjointWith saref:Property,

        saref:UnitOfMeasure .

saref:hasValue a owl:DatatypeProperty ;

    rdfs:label "has value"@en ;

    rdfs:comment "A relationship defining the value of a certain property, e.g., energy or power"@en ;

    rdfs:isDefinedBy saref: .

s4bldg: a owl:Ontology ;

    dcterms:contributor <http://www.maxime-lefrancois.info/>,

        <https://pdi.fbk.eu/people/profile/dragoni> ;

    rdfs:seeAlso <https://www.etsi.org/deliver/etsi_ts/103400_103499/10341003/02.01.01_60/ts_10341003v020101p.pdf> ;

    owl:priorVersion <https://saref.etsi.org/saref4bldg/v1.1.2/> ;

    owl:versionIRI <https://saref.etsi.org/saref4bldg/v2.1.1/> ;

		owl:imports <https://saref.etsi.org/core/v4.1.1/> ;

    owl:versionInfo "v2.1.1" .

s4bldg:Actuator a owl:Class ;

    rdfs:label "short circuit voltage"@en ;

    rdfs:comment "A complex number that specifies the real and imaginary parts of the short-circuit voltage at rated current of a transformer given in %."@en .

saref:Actuator a owl:Class ;

    rdfs:label "Actuator"@en ;

    rdfs:comment "A device responsible for moving or controlling a mechanism or system"@en ;

    rdfs:isDefinedBy saref: .

saref:Sensor a owl:Class ;

    rdfs:label "Sensor"@en ;

    rdfs:comment """A device that detects and responds to events or changes in the physical environment such as light, motion, or temperature changes.

A device that has category saref:Sensor and performs a saref:SensingFunction."""@en ;

    rdfs:isDefinedBy saref: .

saref:hasTimestamp a owl:DatatypeProperty,

        owl:FunctionalProperty ;

    rdfs:label "has timestamp"@en ;

    rdfs:comment "A relationship stating the timestamp of an entity (e.g. a measurement)."@en ;

    rdfs:isDefinedBy "https://saref.etsi.org/core/" ;

    rdfs:range xsd:dateTime .

s4bldg:Building a owl:Class ;

    rdfs:label "Building"@en ;

    rdfs:comment "A building represents a structure that provides shelter for its occupants or contents and stands in one place. The building is also used to provide a basic element within the spatial structure hierarchy for the components of a building project (together with site, storey, and space)."@en ;

    rdfs:label "minimum working pressure"@en ;

    rdfs:comment "Allowable minimum working pressure (relative to ambient pressure). Usually measured in Pascals (Pa, N/m2)."@en .

saref:isMeasuredIn a owl:ObjectProperty ;

    rdfs:label "is measured in"@en ;

    rdfs:comment "A relation between a measurement and the unit of measure in which the measurement value is expressed."@en ;

    rdfs:isDefinedBy "https://saref.etsi.org/core/" .

saref:relatesToProperty a owl:ObjectProperty ;

    rdfs:label "relates to property"@en ;

    rdfs:comment "A relation between a measurement and the property such measurement is about."@en ;

    rdfs:isDefinedBy "https://saref.etsi.org/core/" .

s4bldg:BuildingDevice a owl:Class ;

    rdfs:label "Building device"@en ;

    rdfs:comment "A tangible object designed to accomplish a particular task in a building."@en ;

    rdfs:label "maximum working pressure"@en ;

    rdfs:comment "Maximum working pressure. Usually measured in Pascals (Pa, N/m2)."@en .

saref:Device a owl:Class ;

    rdfs:label "Device"@en ;

    rdfs:comment "A tangible object designed to accomplish a particular task in households, common public buildings or offices. In order to accomplish this task, the device performs one or more functions. For example, a washing machine is designed to wash (task) and to accomplish this task it performs the start and stop function."@en ;

    rdfs:isDefinedBy saref: ;

    rdfs:subClassOf s4bldg:PhysicalObject .

s4bldg:FlowMovingDevice a owl:Class ;

    rdfs:label "Flow moving device"@en ;

    rdfs:comment "The distribution flow element FlowMovingDevice defines the occurrence of an apparatus used to distribute, circulate or perform conveyance of fluids, including liquids and gases (such as a pump or fan), and typically participates in a flow distribution system."@en ;

    rdfs:label "weight"@en ;

    rdfs:comment "The weight of the device. Usually measured in kilograms (kg) or grams (g)."@en .

saref:UnitOfMeasure a owl:Class ;

    rdfs:label "Unit of measure"@en ;

    rdfs:comment "The unit of measure is a standard for measurement of a quantity, such as a Property. For example,  Power is a property and Watt is a unit of power that represents a definite predetermined power: when we say 10 Watt, we actually mean 10 times the definite predetermined power called \"watt\". Our definition is based on the definition of unit of measure in the Ontology of units of Measure (OM). We propose here a list of some units of measure that are relevant for the purpose of the Smart Appliances ontology, but this list can be extended."@en ;

    rdfs:isDefinedBy saref: .

s4bldg:BuildingSpace a owl:Class ;

    rdfs:label "Building space"@en ;

    rdfs:comment "An entity used to define the physical spaces of the building. A building space contains devices or building objects."@en ;

    rdfs:seeAlso "https://w3id.org/ifc/IFC4_ADD1#IfcEnergyConversionDevice" ;

    rdfs:subClassOf s4bldg:DistributionFlowDevice ;

    prov:hadPrimarySource <https://standards.buildingsmart.org/IFC/RELEASE/IFC4_1/FINAL/HTML/schema/ifcsharedbldgserviceelements/lexical/ifcenergyconversiondevice.htm> .

saref:Property a owl:Class ;

    rdfs:label "Property"@en ;

    rdfs:comment "An aspect of an entity that can be observable by a sensor."@en ;

    rdfs:isDefinedBy "https://saref.etsi.org/core/" ;

    owl:disjointWith saref:UnitOfMeasure .