@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_hvac_	skos:broader	<http://webisa.webdatacommons.org/concept/facility+system_controller_> .
isac:fire_alarm_	skos:broader	<http://webisa.webdatacommons.org/concept/facility+system_controller_> .