{ "items" : [
    { "id" : "http://dbpedia.org/resource/B_meson"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "In particle physics, B mesons are mesons composed of a bottom antiquark and either an up (B+), down (B0), strange (B0s) or charm quark (B+c). The combination of a bottom antiquark and a top quark is not thought to be possible because of the top quark's short lifetime."] } } }
