@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_sip_	skos:broader	isac:session_protocol_ .
<http://webisa.webdatacommons.org/concept/session+initiation+protocol_sip_>	skos:broader	isac:session_protocol_ .