<http://webisa.webdatacommons.org/219106756>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/219106756>	<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://webisa.webdatacommons.org/219106756>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
<http://webisa.webdatacommons.org/prov/8926809>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/219106756> .