About: http://webisa.webdatacommons.org/88497409

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	Rare earth elements, such as cerium, lanthanum, thorium, or sodium replace some of the calcium, and partial substitution of aluminum is replaced by ferric and ferrous iron.
http://www.w3.org/ns/prov#wasQuotedFrom	ganoksin.com