@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_college_	skos:broader	isac:basic_course_ .
isac:_english_	skos:broader	isac:basic_course_ .
isac:_prerequisite_	skos:broader	isac:basic_course_ .
isac:_calculus_	skos:broader	isac:basic_course_ .
isac:_introduction_	skos:broader	isac:basic_course_ .
isac:_math_	skos:broader	isac:basic_course_ .
isac:_grammar_	skos:broader	isac:basic_course_ .
isac:english_composition_	skos:broader	isac:basic_course_ .