<http://webisa.webdatacommons.org/prov/7024354>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/104252326> .
<http://webisa.webdatacommons.org/104252326>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/104252326>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
<http://webisa.webdatacommons.org/104252326>	<http://www.w3.org/ns/prov#value>	"No. 759,341 5 Claims. (Cl. 208-41) This invention relates to oil separation and in particular to the separation of crude oil from oil bearing media or mineral matter such for example as sand, shale, clay and similar substances in Which oil occurs." .