@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_chart_	skos:broader	isac:work_sample_ .
isac:_clip_	skos:broader	isac:work_sample_ .
isac:_proposal_	skos:broader	isac:work_sample_ .