PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Specific examples of electrochromic materials are WO3, MoO3, and V2 O5 ; additional materials are disclosed in U.S. Pat. No. 3,521,941 (issued July 28, 1970).
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com