@prefix ex: <http://example.org/iadopt/challenge/> .
@prefix iop: <https://w3id.org/iadopt/ont/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

ex:glvar a iop:Variable ;
    rdfs:label "solubility of molecular oxygen from air in water" ;
    rdfs:comment "measurement of the solubility of molecuar oxygen in air in MilliQ water (18.2 MOhm) using the static method" ;
    iop:hasConstraint [
      a iop:Constraint ;
      rdfs:label "local air (atmosphere)" ;
      iop:constrains ex:SysSource
    ], [
      a iop:Constraint ;
      rdfs:label "MilliQ purity" ;
      iop:constrains ex:SysTarget
    ], [
      a iop:Constraint ;
      rdfs:label "partial pressure of molecular oxygen in the gas phase" ;
      iop:constrains ex:OoI
    ], [
      a iop:Constraint ;
      rdfs:label "thermodynamic temperature" ;
      iop:constrains ex:Prop
    ], [
      a iop:Constraint ;
      rdfs:label "atmospheric pressure" ;
      iop:constrains ex:Prop
    ], [
      a iop:Constraint ;
      rdfs:label "static method" ;
      iop:constrains ex:Prop
    ] ;
    iop:hasMatrix ex:Matrix ;
    iop:hasObjectOfInterest ex:OoI ;
    iop:hasProperty ex:Prop .

ex:Matrix
    a iop:Entity, iop:System ;
    rdfs:label "two-phase gas-liquid system" ;
    iop:hasSource ex:SysSource;
    iop:hasTarget ex:SysTarget.

ex:OoI
    a iop:Entity ;
    rdfs:label "molecular oxygen" .

ex:Prop
    a iop:Property ;
    rdfs:label "solubility" .

ex:SysSource
    a iop:Entity ;
    rdfs:label "air (gas)" .

ex:SysTarget
    a iop:Entity ;
    rdfs:label "water (liquid)" .