About: http://webisa.webdatacommons.org/216010785

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 carbon material is not particularly limited and may optionally be selected from e.g. natural graphite, petroleum coke, pitch coke, petroleum coke or pitch coke graphitized by heat treatment, pyrolytic graphite and carbon fiber.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com