メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.788034366669 43.2165787631027, 141.787856358948 43.2169833541235, 141.787681271997 43.2173887297354, 141.787371721169 43.2178367455651, 141.787367053634 43.2178436187815, 141.786988942956 43.2183988188187, 141.786600803441 43.2178137337331, 141.78639831781 43.2175184494875, 141.786278634681 43.2173617653695, 141.785638698264 43.2164250714147, 141.785532948269 43.2162765314385, 141.785151627766 43.2157025124139, 141.785921121846 43.2159414349245, 141.787974385625 43.2165760625005, 141.788034366669 43.2165787631027)) ^^http://www.opengis.net/ont/geosparql#wktLiteral