<http://webisa.webdatacommons.org/171671381> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/171671381> <http://www.w3.org/ns/prov#wasQuotedFrom> <google.es> . <http://webisa.webdatacommons.org/171671381> <http://www.w3.org/ns/prov#value> "The presently preferred inert liquids are mineral oils and natural oils such as lanolin because they are easily available, relatively unexpensive and provide excellent results." . <http://webisa.webdatacommons.org/prov/79669918> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/171671381> .