About: http://webisa.webdatacommons.org/114650210

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	Barium oxide, silicon dioxide, and rare earth oxides including lanthanum, cerium, praseodymium, and neodymium are preferred.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es