About: http://webisa.webdatacommons.org/219106756

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	The use of tungsten carbide-cobalt composite material for extremely hard surfaces, such as cutting tools, is well known.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es