@prefix skos: . @prefix isothes: . skos:broader , ; skos:prefLabel "B.F. Skinner"@en ; a skos:Concept . skos:prefLabel "key people in political science"@en ; a skos:Concept ; skos:narrower . a skos:Collection, isothes:ConceptGroup ; skos:prefLabel "people"@en ; skos:member . skos:prefLabel "key people in cognitive behavioral therapy"@en ; a skos:Concept ; skos:narrower .