{ "items" : [
    { "id" : "http://dbpedia.org/resource/Opposed-piston_engine"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "An opposed-piston engine is a reciprocating internal combustion engine in which each cylinder has a piston at both ends, and no cylinder head." ] ,
        "http://www.w3.org/2002/07/owl#differentFrom" : [ "http://dbpedia.org/resource/Flat_engine" ] ,
        "http://xmlns.com/foaf/0.1/depiction" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/Opposed_piston_engine_1.jpg" ] ,
        "http://dbpedia.org/ontology/thumbnail" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/Opposed_piston_engine_1.jpg?width=300"] } } }
