<http://webisa.webdatacommons.org/concept/silicon+nitride_si3n4_>	<http://webisa.webdatacommons.org/ontology#hasHead>	"si3n4" .
<http://webisa.webdatacommons.org/concept/silicon+nitride_si3n4_>	<http://www.w3.org/2000/01/rdf-schema#label>	"silicon nitride si3n4" .
<http://webisa.webdatacommons.org/concept/silicon+nitride_si3n4_>	<http://webisa.webdatacommons.org/ontology#hasPreModifier>	"silicon nitride" .