{ "items" : [
    { "id" : "http://dbpedia.org/resource/RCA_Photophone"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "This article is for the sound-on-film technology. For the telecommunication device invented by Alexander Graham Bell and Charles Sumner Tainter, see Photophone.RCA Photophone was the trade name given to one of four major competing technologies that emerged in the American film industry in the late 1920s for synchronizing electrically recorded audio to a motion picture image."] } } }
