@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_htc_	skos:broader	isac:android_maker_ .
isac:_apple_	skos:broader	isac:android_maker_ .
isac:_samsung_	skos:broader	isac:android_maker_ .