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        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "A dry sump is a lubricating motor oil management method for four-stroke and large two-stroke piston internal combustion engines that uses additional pumps and a secondary reservoir for oil, as compared to a conventional wet sump system, which uses only the main sump (U.S.: oil pan) below the engine and a single pump.  A dry sump can also be implemented with a single vacuum pump that creates positive and negative pressures to pull and push the oil out and into the engine." ] ,
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        "http://dbpedia.org/ontology/thumbnail" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/Dry_sump.svg?width=300"] } } }
