メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.92437539921 35.1021432910025, 136.924371586524 35.1021575805594, 136.922900361681 35.1016419094846, 136.922881794769 35.1016031370041, 136.923127669795 35.1011562824329, 136.923837323711 35.0998665064939, 136.925309813306 35.1004097047213, 136.92437539921 35.1021432910025)) ^^http://www.opengis.net/ont/geosparql#wktLiteral