About: http://webisa.webdatacommons.org/9124280

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	Specifically, materials such as sponge iron powder and iron oxide, tungsten carbide powder, tin oxide powder, boron powder or any other semiconductor material may be used, although
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com