{
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    {
      "type": "Feature",
      "geometry": { "type": "Point", "coordinates": [ 12.5 ] },
      "properties": { "error": "Incomplete coordinates" }
    },
    {
      "type": "feature",
      "geometry": { "type": "Point", "coordinates": [ "long", "lat" ] },
      "properties": { "error": "Lowercase type and string coordinates" }
    },
    {
      "type": "Feature",
      "geometry": null,
      "properties": null,
      "missing_properties_field": true
    },
    {
      "type": "Feature",
      "properties": { "error": "Missing geometry field" }
    },
    {
      "type": "Feature",
      "geometry": { "type": "Polygon", "coordinates": [[[0,0], [1,1], [1,0]]] },
      "properties": { "error": "LinearRing not closed" }
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}