{ "items" : [
    { "id" : "http://dbpedia.org/resource/Rock_opera"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "A rock opera is a work of rock music that presents a storyline told over multiple parts, songs or sections; however, it is not an opera. A rock opera differs from a conventional rock album, which usually includes songs that are not unified by a common theme or narrative. More recent developments include metal opera, punk rock opera, and rap opera (sometimes also called hip-hopera)."] } } }
