{
  "name": "geometry_n",
  "type": "function",
  "groups": ["GeometryGroup"],
  "description": "Returns a specific geometry from a geometry collection, or NULL if the input geometry is not a collection. Also returns a part from a multipart geometry.",
  "arguments": [{
    "arg": "geometry",
    "description": "geometry collection"
  }, {
    "arg": "index",
    "description": "index of geometry to return, where 1 is the first geometry in the collection"
  }],
  "examples": [{
    "expression": "geom_to_wkt(geometry_n(geom_from_wkt('GEOMETRYCOLLECTION(POINT(0 1), POINT(0 0), POINT(1 0), POINT(1 1))'),3))",
    "returns": "'Point (1 0)'"
  }],
  "tags": ["part", "input", "multipart", "collection", "specific"]
}