@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_oil_	skos:broader	isac:commodity_future_ .
isac:_gold_	skos:broader	isac:commodity_future_ .
isac:_grain_	skos:broader	isac:commodity_future_ .
isac:crude_oil_	skos:broader	isac:commodity_future_ .
isac:_wheat_	skos:broader	isac:commodity_future_ .