@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_teacher_	skos:broader	isac:knowledgeable_instructor_ .
isac:_david_	skos:broader	isac:knowledgeable_instructor_ .
isac:_elaine_	skos:broader	isac:knowledgeable_instructor_ .