@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:_polycarbonate_	skos:broader	isac:_interlayer_ .
isac:_layer_	skos:broader	isac:_interlayer_ .
isac:_interlayer_	skos:broader	isac:_interlayer_ .
isac:_pvb_	skos:broader	isac:_interlayer_ .