<http://webisa.webdatacommons.org/prov/257781391>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/199028583> .
<http://webisa.webdatacommons.org/199028583>	<http://www.w3.org/ns/prov#value>	"oil and gas pressure control and separation equipment, including valves, wellheads, controls, chokes, blowout preventers and assembled systems" .
<http://webisa.webdatacommons.org/prov/327127862>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/199028583> .
<http://webisa.webdatacommons.org/199028583>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/199028583>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<slideshare.net> .