@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_cpt_	skos:broader	isac:billing_code_ .
<http://webisa.webdatacommons.org/concept/prepaid+account_code_>	skos:broader	isac:billing_code_ .