{ "items" : [
    { "id" : "http://dbpedia.org/resource/Mainstream_Rock_(chart)"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Mainstream Rock is a music chart in Billboard magazine which ranks the most-played songs on mainstream rock radio stations, a category that combines the formats of active rock and heritage rock."] } } }
