メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.338551787447 43.0952762186804, 141.338481319111 43.0956015584779, 141.338403575419 43.0959321153695, 141.336827283953 43.0957130485222, 141.336828290286 43.0956453297549, 141.336909984494 43.0953788056013, 141.336938792888 43.0952419653392, 141.336980195491 43.0950713275978, 141.337041711571 43.0948580908104, 141.337092592256 43.0947018059392, 141.337863639613 43.0948147904237, 141.33864431689 43.0949386066842, 141.338551787447 43.0952762186804)) ^^http://www.opengis.net/ont/geosparql#wktLiteral