@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_problem_	skos:broader	isac:server_problem_ .
isac:_file_	skos:broader	isac:server_problem_ .
isac:_link_	skos:broader	isac:server_problem_ .
isac:_lag_	skos:broader	isac:server_problem_ .