メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.4327387356 43.7692636007317, 142.432751453212 43.7693944328934, 142.432778652958 43.7696675575213, 142.432822152264 43.7701042434894, 142.43283500383 43.7702831583409, 142.429970774163 43.7704289610359, 142.429312689351 43.7704624357, 142.429287482436 43.7702982376799, 142.429284241315 43.7702771284342, 142.42915348192 43.7688406797444, 142.429088212586 43.7688441922256, 142.429081783647 43.768771822203, 142.43267273279 43.7685770421177, 142.432676950682 43.7686277206413, 142.432697634483 43.7688405893307, 142.4327387356 43.7692636007317)) ^^http://www.opengis.net/ont/geosparql#wktLiteral