@prefix dct: . @prefix ns1: . @prefix ns2: . @prefix ns3: . @prefix rdfs: . @prefix skos: . a skos:Concept ; dct:created "2019-01-14" ; dct:modified "2019-01-14" ; ns1:hasProfile ; ns3:status ; rdfs:seeAlso ; skos:definition "Mole fraction is used in the construction mole_fraction_of_X_in_Y"@en ; skos:exactMatch ; skos:prefLabel "mole fraction of gaseous elemental mercury in air"@en ; ns2:hadPrimarySource .