{ "items" : [
    { "id" : "http://dbpedia.org/resource/Quarkonium"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "In particle physics, quarkonium (from quark + onium, pl. quarkonia) designates a flavorless meson whose constituents are a quark and its own antiquark. Examples of quarkonia are the J/ψ meson (an example of charmonium, cc) and the ϒ meson (bottomonium,  bb). Because of the high mass of the top quark, toponium does  not exist, since the top quark decays through the electroweak interaction before a bound state can form." ] ,
        "http://www.w3.org/2000/01/rdf-schema#seeAlso" : [ "http://dbpedia.org/resource/J",
          "http://dbpedia.org/resource/Ψ_meson",
          "http://dbpedia.org/resource/Upsilon_meson"] } } }
