<http://webisa.webdatacommons.org/271623929>	<http://www.w3.org/ns/prov#value>	"lubrication is ensured by the oil, while that of cooling is mainly by the air." .
<http://webisa.webdatacommons.org/271623929>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .
<http://webisa.webdatacommons.org/prov/234301366>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/271623929> .
<http://webisa.webdatacommons.org/271623929>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .