About: http://webisa.webdatacommons.org/278807329

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	Standard contact arms, having the shape of a thick-walled tube, plate, rod or others, are made of low-resistance materials, e.g. copper or aluminum.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com