@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_firefox_	skos:broader	isac:open-source_program_ .
isac:_openoffice_	skos:broader	isac:open-source_program_ .
isac:_linux_	skos:broader	isac:open-source_program_ .
isac:_blender_	skos:broader	isac:open-source_program_ .