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    { "id" : "http://dbpedia.org/resource/Rock_magnetism"
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        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Rock magnetism is the study of the magnetic properties of rocks, sediments and soils. The field arose out of the need in paleomagnetism to understand how rocks record the Earth's magnetic field. This remanence is carried by minerals, particularly certain strongly magnetic minerals like magnetite (the main source of magnetism in lodestone)." ] ,
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        "http://dbpedia.org/ontology/thumbnail" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/VSM.jpg?width=300"] } } }
