POLYGON((4.51838 49.82799,4.5177 49.8277,4.51738 49.8276,4.51701 49.82767,4.517 49.82782,4.51707 49.82807,4.51744 49.82796,4.51796 49.82799,4.51819 49.82811,4.51838 49.82799,4.51838 49.82799))