{ "items" : [
    { "id" : "http://dbpedia.org/resource/Dynamo_theory"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "In physics, the dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field. The dynamo theory describes the process through which a rotating, convecting, and electrically conducting fluid can maintain a magnetic field over astronomical time scales.  A dynamo is thought to be the source of the Earth's magnetic field, as well as the magnetic fields of other planets." ] ,
        "http://xmlns.com/foaf/0.1/depiction" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/Outer_core_convection_rolls.jpg" ] ,
        "http://dbpedia.org/ontology/thumbnail" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/Outer_core_convection_rolls.jpg?width=300"] } } }
