About: http://webisa.webdatacommons.org/405582183

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	The second metal oxide is selected from the group consisting of rare earth oxides, except for ceria, and alkali earth metal oxides.
http://www.w3.org/ns/prov#wasQuotedFrom	faqs.org