@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_however_	skos:broader	isac:math_error_ .
isac:_mistake_	skos:broader	isac:math_error_ .
isac:_point_	skos:broader	isac:math_error_ .
isac:_reason_	skos:broader	isac:math_error_ .
isac:dark_matter_	skos:broader	isac:math_error_ .