メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.991582247583 34.9977452320281, 136.990966567358 34.9979994133828, 136.990828049263 34.9980519594556, 136.989904819863 34.9982930062095, 136.989732998934 34.9983391628372, 136.989590826169 34.9975749720703, 136.990892093215 34.9974585732909, 136.990750550934 34.9965180378724, 136.991416979831 34.9964530257386, 136.991557112561 34.9975027892815, 136.991582247583 34.9977452320281)) ^^http://www.opengis.net/ont/geosparql#wktLiteral