@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_program_	skos:broader	isac:variable_value_ .
isac:_string_	skos:broader	isac:variable_value_ .
isac:_value_	skos:broader	isac:variable_value_ .
<http://webisa.webdatacommons.org/concept/_value_of+the+pc>	skos:broader	isac:variable_value_ .