<http://webisa.webdatacommons.org/concept/_bk7_>	<http://www.w3.org/2002/07/owl#sameAs>	<http://dbpedia.org/resource/Borosilicate_glass> .
<http://webisa.webdatacommons.org/concept/_bk7_>	<http://www.w3.org/2000/01/rdf-schema#label>	"bk7" .
<http://webisa.webdatacommons.org/concept/_bk7_>	<http://webisa.webdatacommons.org/ontology#hasHead>	"bk7" .