{ "items" : [
    { "id" : "http://dbpedia.org/resource/Cyclotron"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "A cyclotron is a type of particle accelerator invented by Ernest O. Lawrence in 1932 in which charged particles accelerate outwards from the center along a spiral path.   The particles are held to a spiral trajectory by a static magnetic field and accelerated by a rapidly varying (radio frequency) electric field.   Lawrence was awarded the 1939 Nobel prize in physics for this invention." ] ,
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        "http://dbpedia.org/ontology/thumbnail" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/Berkeley_60-inch_cyclotron.jpg?width=300"] } } }
