About: http://webisa.webdatacommons.org/19329050

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	Coltan, or columbite tantalite, is a mineral essential to the manufacture of a wide array of consumer electronics???cellphones, laptops.
http://www.w3.org/ns/prov#wasQuotedFrom	allthingsd.com