@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:metallocene_catalyst_	skos:broader	isac:catalyst_composition_ .
isac:_process_	skos:broader	isac:catalyst_composition_ .
isac:catalyst_composition_	skos:broader	isac:catalyst_composition_ .