メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.781411177625 43.2142174172829, 141.780656377498 43.2149674773995, 141.780569075334 43.2150793648065, 141.780491043479 43.2151546489697, 141.780264719166 43.2153702634144, 141.780068774441 43.2150605038326, 141.779854894582 43.214845194855, 141.779589528575 43.2145981658908, 141.77931512167 43.2144015945458, 141.779032062908 43.2142112479356, 141.778748822279 43.2140447401001, 141.779528422495 43.2132596296363, 141.780458634377 43.2137328893924, 141.781411177625 43.2142174172829)) ^^http://www.opengis.net/ont/geosparql#wktLiteral