A linear ring MUST follow the right-hand rule with respect to the
      area it bounds, i.e., exterior rings are counterclockwise, and
      holes are clockwise.

def as_geom(qk: str):
    t = mercantile.quadkey_to_tile(qk)
    west, south, east, north = mercantile.bounds(t)
    return {
        "type": "Polygon",
        "coordinates": [[
            [east, north],
            [west, north],
            [west, south],
            [east, south],
            [east, north],
        ]],
    }