@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:slvar
    a 
        iop:Variable ;
    rdfs:label 
        "solubility of naphthalene in water at room temperature" ;
    rdfs:comment 
        """solubility measurement of napathalene in deionized water at room temperature by monitoring absorption at 279 nm""" ;
    iop:hasObjectOfInterest 
        <https://www.wikidata.org/wiki/Q179724> ;
    iop:hasMatrix 
        ex:Matrix ;
    iop:hasProperty 
        <https://www.wikidata.org/wiki/Q170731> ;
    iop:hasConstraint 
        [ a iop:Constraint ;
             rdfs:label "state: solid phase" ;
             iop:constrains <https://www.wikidata.org/wiki/Q179724> ;
        ] ,
        [ a iop:Constraint ;
             rdfs:label "state: dissolved" ;
             iop:constrains <https://www.wikidata.org/wiki/Q179724> ;
        ] ,
        [ a iop:Constraint ;
             rdfs:label "state: liquid phase" ;
             iop:constrains <https://www.wikidata.org/wiki/Q283> ;
        ] ,
        [ a iop:Constraint ;
             rdfs:label "condition: at room temperature" ;
             iop:constrains <https://www.wikidata.org/wiki/Q170731> ;
        ] ,
        [ a iop:Constraint ;
             rdfs:label "condition: at 279 nm wavelength" ;
             iop:constrains <https://www.wikidata.org/wiki/Q170731> ;
        ] ,
        [ a iop:Constraint ;
             rdfs:label "quality: dionized" ;
             iop:constrains <https://www.wikidata.org/wiki/Q283> ;
        ] ,
        [ a iop:Constraint ;
             rdfs:label "state: at solid-liquid equilibrium" ;
             iop:constrains ex:Matrix ;
        ] .

<https://www.wikidata.org/wiki/Q179724>
    a 
        iop:Entity ;
    rdfs:label 
        "naphthalene (C10H8)" .

ex:Matrix
    a 
        iop:Entity ,
        iop:AsymmetricSystem ;
    rdfs:label 
        "two-phase solid-liquid system" ;
    iop:hasSource 
        <https://www.wikidata.org/wiki/Q179724> ;
    iop:hasTarget 
        <https://www.wikidata.org/wiki/Q283> .

<https://www.wikidata.org/wiki/Q170731>
    a 
        iop:Property ;
    rdfs:label 
        "solubility" .

<https://www.wikidata.org/wiki/Q283>
    a 
        iop:Entity ;
    rdfs:label 
        "water (H2O)" .