POLYGON ((-0.139009918764094 51.51240367613726, -0.138850147959194 51.5124984235647, -0.138792700800313 51.51249351529381, -0.138794094710997 51.51245931591851, -0.138972135070828 51.51238032877097, -0.139009918764094 51.51240367613726))