@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_base_	skos:broader	isac:complex_formulum_ .
isac:_cost_	skos:broader	isac:complex_formulum_ .
isac:_case_	skos:broader	isac:complex_formulum_ .
isac:_msm_	skos:broader	isac:complex_formulum_ .