@prefix iop: <https://w3id.org/iadopt/ont/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ex: <http://example.org/iadopt/challenge/> .
@prefix iopp: <https://w3id.org/iadopt/pattern/> .

ex:bpvar
    a 
        iop:Variable ;
    rdfs:label 
        "boiling point of benzene" ;
    rdfs:comment 
        """measurement of the thermodynamic temperature (or temperature range) for the transformation of a known purity (99.07% (v/v)) liquid sample of benzene into a gas at atmospheric pressure""" ;
    iop:hasObjectOfInterest 
        <https://www.wikidata.org/wiki/Q2270> ;
    iop:hasProperty 
        <https://www.wikidata.org/wiki/Q264647> ;
    iop:hasConstraint 
        [ a iop:Constraint ;
             rdfs:label "temporal extent: liquid to gas phase transition" ;
             iop:constrains <https://www.wikidata.org/wiki/Q264647> ;
        ] ,
        [ a iop:Constraint ;
             rdfs:label "condition: at 1 atm pressure" ;
             iop:constrains <https://www.wikidata.org/wiki/Q264647> ;
        ] ,
        [ a iop:Constraint ;
             rdfs:label "quality: purity 99.07% (v/v)" ;
             iop:constrains <https://www.wikidata.org/wiki/Q2270> ;
        ] .

<https://www.wikidata.org/wiki/Q2270>
    a 
        iop:Entity ;
    rdfs:label 
        "benzene" .

<https://www.wikidata.org/wiki/Q264647>
    a 
        iop:Property ;
    rdfs:label 
        "thermodynamic temperature" .