{

  "type":"GeometryCollection",

  "geometries": [

    { // point

      "coordinates":[-100.0,50.0],

      "orientation":[0.0,0.0],

      "type":"Point",

      "cs":"89000",

      "dimensions":2,

      "extras":{}

    },

    { // polygon

      "coordinates":[

        [

          [-100.0, -100.0],

          [0.0, -100.0],

          [100.0, 0.0],

          [50.0, 100.0],

          [0.0, 100.0],

          [-100.0, -100.0]

       ],

      ],

      "type":"Polygon",

      "cs":"89000",

      "dimensions":2,

      "corrections": [],

      "extras":{}

    },

    { // line

      "coordinates":[

        [0.0,-150.0],

        [100.0,-150.0],

        [100.0,-100.0],

        [150.0, 0.0]

      ],

      "type":"LineString",

      "cs":"89000",

      "dimensions":2,

      "extras":{}

    }

  ]

}