About: http://webisa.webdatacommons.org/173421801

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 conducting material used for the granules may be any type of metal, e.g. iron, copper, or any type of metal alloy, or non-metal material, such as graphite or carbon.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es