{ "items" : [
    { "id" : "http://dbpedia.org/resource/Twelve_leverage_points"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "The twelve leverage points to intervene in a system were proposed by Donella Meadows, a scientist and system analyst focused on environmental limits to economic growth."] } } }
