メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.638702257307 34.7982379468825, 134.6383921075 34.7981454817156, 134.63802783644 34.7980490665732, 134.63789986796 34.7980169919199, 134.637498038839 34.7979571522665, 134.637122501301 34.7979134432893, 134.636758470311 34.797881960082, 134.636317464044 34.79786545848, 134.63575356217 34.7978615165564, 134.635778348346 34.7967902315694, 134.63577639825 34.7952927770955, 134.639227288383 34.7953056429543, 134.639223642113 34.7966781747419, 134.638697589203 34.7966851386875, 134.638702257307 34.7982379468825)) ^^http://www.opengis.net/ont/geosparql#wktLiteral