メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.369919092406 43.7726561004061, 142.370178014599 43.7731035527327, 142.369916563086 43.7731776085703, 142.369978919041 43.7733013100502, 142.3688330063 43.7735845532339, 142.368526983661 43.7730603210594, 142.368698030636 43.7730048902173, 142.368555252829 43.7727893608458, 142.368438368211 43.7725706751393, 142.369522375178 43.7722496413564, 142.369666927463 43.7722068306417, 142.369919092406 43.7726561004061)) ^^http://www.opengis.net/ont/geosparql#wktLiteral