メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.444894553372 43.0476168524081, 141.444318321437 43.0477166776499, 141.443610255513 43.0478441250296, 141.443632904536 43.0475424259918, 141.443674370746 43.0468802733147, 141.443674927169 43.0467424292004, 141.443681739224 43.0465700269144, 141.443734953783 43.0459332056111, 141.443746119154 43.0455343688141, 141.444742024338 43.0453185689997, 141.444861207785 43.0456822431647, 141.445057866133 43.0462993714621, 141.445459761905 43.0475165956576, 141.444894553372 43.0476168524081)) ^^http://www.opengis.net/ont/geosparql#wktLiteral