@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:front_row_	skos:broader	isac:math_tool_ .
isac:_money_	skos:broader	isac:math_tool_ .
isac:_calculator_	skos:broader	isac:math_tool_ .