{ "items" : [
    { "id" : "http://dbpedia.org/resource/Deep_sea_mining"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Deep sea mining is a relatively new mineral retrieval process that takes place on the  ocean floor. Ocean mining sites are usually around large areas of polymetallic nodules or active and extinct hydrothermal vents at about 1,400 – 3,700 m below the ocean’s surface. The vents create sulfide deposits, which contain valuable metals such as silver, gold, copper, manganese, cobalt, and zinc."] } } }
