{ "items" : [
    { "id" : "http://dbpedia.org/resource/Axion"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "The axion is a hypothetical elementary particle postulated by the Peccei–Quinn theory in 1977 to resolve the strong CP problem in quantum chromodynamics (QCD). If axions exist and have low mass within a specific range, they are of interest as a possible component of cold dark matter."] } } }
