About: http://webisa.webdatacommons.org/394296178

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	In this invention, the carbon black need only be made substantially of carbon, it being possible to use various known types of carbon black.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com