About: http://webisa.webdatacommons.org/150289818

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	Carbon is an excellent high temperature lubricant and coal dust is mostly carbon.
http://www.w3.org/ns/prov#wasQuotedFrom	artmetal.com