{ "items" : [
    { "id" : "http://dbpedia.org/resource/Gas-cooled_reactor"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "A gas-cooled reactor (GCR) is a nuclear reactor that uses graphite as a neutron moderator and carbon dioxide (helium can also be used) as coolant."] } } }
