@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:proxy_server_	skos:broader	isac:intermediate_server_ .
isac:_proxy_	skos:broader	isac:intermediate_server_ .
<http://webisa.webdatacommons.org/concept/network+access_server_>	skos:broader	isac:intermediate_server_ .