@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_witten_	skos:broader	isac:string_theorist_ .
isac:_clifford_	skos:broader	isac:string_theorist_ .
isac:brian_greene_	skos:broader	isac:string_theorist_ .
isac:_lubos_	skos:broader	isac:string_theorist_ .
isac:edward_witten_	skos:broader	isac:string_theorist_ .
isac:_susskind_	skos:broader	isac:string_theorist_ .