@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:combvar
    a 
        iop:Variable ;
    rdfs:label 
        "estimation of the energy of reaction per mole upon combustion of hexanol" ;
    rdfs:comment 
        """energy released (or taken in) upon quanitiative combustion of a 5.00 g sample of 99.98%(w/w) pure hexanol in air""" ;
    iop:hasObjectOfInterest 
        <https://www.wikidata.org/wiki/Q76933> ;
    iop:hasMatrix 
        <https://www.wikidata.org/wiki/Q133235> ;
    iop:hasProperty 
        <https://www.wikidata.org/wiki/Q11379> ;
    iop:hasConstraint 
        [ a iop:Constraint ;
             rdfs:label "quality: purity 99.98%(w/w)" ;
             iop:constrains <https://www.wikidata.org/wiki/Q76933> ;
        ] ,
        [ a iop:Constraint ;
             rdfs:label "condition: at atmospheric pressure" ;
             iop:constrains <https://www.wikidata.org/wiki/Q133235> ;
        ] ,
        [ a iop:Constraint ;
             rdfs:label "condition: at atmospheric oxygen level" ;
             iop:constrains <https://www.wikidata.org/wiki/Q133235> ;
        ] ,
        [ a iop:Constraint ;
             rdfs:label "temporal extent: chemical reaction" ;
             iop:constrains <https://www.wikidata.org/wiki/Q11379> ;
        ] .

<https://www.wikidata.org/wiki/Q76933>
    a 
        iop:Entity ;
    rdfs:label 
        "hexanol (C6H14O)" .

<https://www.wikidata.org/wiki/Q133235>
    a 
        iop:Entity ;
    rdfs:label 
        "combustion reaction" .

<https://www.wikidata.org/wiki/Q11379>
    a 
        iop:Property ;
    rdfs:label 
        "energy" .