メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.98823160419 34.9866830018328, 136.988229637232 34.9868118774267, 136.988215834036 34.9868778452772, 136.988150147171 34.9870407114163, 136.988122801659 34.9870924334078, 136.987908211473 34.986991264694, 136.987799364426 34.9869289875083, 136.986459540477 34.9862888611894, 136.986593366685 34.9861130013766, 136.98664159578 34.9861492014289, 136.986812427527 34.9859064933748, 136.987246774583 34.9861391224437, 136.98764865369 34.9863638834282, 136.98799298971 34.9865515860051, 136.98823160419 34.9866830018328)) ^^http://www.opengis.net/ont/geosparql#wktLiteral