About: http://webisa.webdatacommons.org/133374184

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	Examples of metal oxides include, among others, the oxides of copper, cobalt, manganese, tungsten, bismuth, molybdenum, and iron, such as CuO, Co2 O3, Co3 O4, CoFe2 O4, MoO3, Bi2 MoO6, and Bi2 O3.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com