ell.geojson

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {},
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
              [0.0, 0.0],
              [4.0, 0.0],
              [4.0, 1.0],
              [1.0, 1.0],
              [1.0, 4.0],
              [0.0, 4.0],
              [0.0, 0.0]
          ]
        ]
      }
    }
  ]
}