About: http://webisa.webdatacommons.org/201251783

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 materials used for thermocouples in the thermopile of the invention may be pure metals such as copper or nickel, alloys such as constantan or Nichrome, or compounds such as oxides, nitrides, carbides and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com