{ "items" : [
    { "id" : "http://dbpedia.org/resource/Sub-bituminous_coal"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Sub-bituminous coal is a type of coal whose properties range from those of lignite to those of bituminous coal and are used primarily as fuel for steam-electric power generation."] } } }
