About: http://webisa.webdatacommons.org/442850614

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	Furthermore, fine particles of magnetic materials, such as magnetite and ferrite; titanium black; and others may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com