About: http://webisa.webdatacommons.org/53120180

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	According to a sixth embodiment of the invention, the corrugated medium 4 is the sheet having charcoal, activated charcoal, carbon, or substances mostly comprised of carbon as an embedded additive.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es