@prefix skos:	<http://www.w3.org/2004/02/skos/core#> .
@prefix isac:	<http://webisa.webdatacommons.org/concept/> .
isac:cotangent_bundle_	skos:broader	isac:vector_bundle_ .
<http://webisa.webdatacommons.org/concept/algebraic+vector_bundle_>	skos:broader	isac:vector_bundle_ .
isac:tangent_bundle_	skos:broader	isac:vector_bundle_ .