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    { "id" : "http://dbpedia.org/resource/Seismic_wave"
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        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Seismic waves are waves of energy that travel through the Earth's layers, and are a result of an earthquake, explosion, or a volcano that gives out low-frequency acoustic energy. Many other natural and anthropogenic sources create low-amplitude waves commonly referred to as ambient vibrations. Seismic waves are studied by geophysicists called seismologists." ] ,
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        "http://dbpedia.org/ontology/thumbnail" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/Pswaves.jpg?width=300"] } } }
