Geospatial Polygon Value

		GeoJSON coordinates representation of geospatial feature of type polygon, used to specify a boundary used within shape files.
		A polygon is encoded as a coordinate array of points where the beginning point and the last point are the same.
		A polygon may or may not have 'holes'.
		For example, a polygon with No holes:

		[
			[
             [100.0, 0.0],
             [101.0, 0.0],
             [101.0, 1.0],
             [100.0, 1.0],
             [100.0, 0.0]
			]
		]

		For example, a polygon with holes:
		[
			[
             [100.0, 0.0],
             [101.0, 0.0],
             [101.0, 1.0],
             [100.0, 1.0],
             [100.0, 0.0]
			],
			[
             [100.8, 0.8],
             [100.8, 0.2],
             [100.2, 0.2],
             [100.2, 0.8],
             [100.8, 0.8]
			]
		]
		https://tools.ietf.org/html/rfc7946