About: http://webisa.webdatacommons.org/254926435

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, praeseodymium, neodymium and samarium are also useful dopants, and here again especially when used in combination with other dopants.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com