About: http://webisa.webdatacommons.org/241160712

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Typical Si3 N4 starting materials may also be contaminated with metals, such as iron or aluminum.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com