@prefix rdfs: . @prefix owl: . @prefix gacs: . @prefix rdf: . @prefix dc: . @prefix skos: . rdfs:label "Concept definition"@en ; a owl:Class . gacs:def_7c5f7694 rdf:value "A mass of bubbles of air or gas in a liquid film."@en ; dc:source , ; a . gacs:C14004 skos:definition gacs:def_7c5f7694 .