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    { "id" : "http://dbpedia.org/resource/Artificial_cardiac_pacemaker"
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        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "A pacemaker (or artificial pacemaker, so as not to be confused with the heart's natural pacemaker) is a medical device which uses electrical impulses, delivered by electrodes contracting the heart muscles, to regulate the beating of the heart.The primary purpose of a pacemaker is to maintain an adequate heart rate, either because the heart's natural pacemaker is not fast enough, or because there is a block in the heart's electrical conduction system." ] ,
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        "http://dbpedia.org/ontology/thumbnail" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/St_Jude_Medical_pacemaker_with_ruler.jpg?width=300"] } } }
