メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.259644507529 43.0553953329698, 141.259548804104 43.0559367425607, 141.258887681617 43.055873770608, 141.258625302293 43.0558487824106, 141.258378626377 43.0558253379864, 141.257677193025 43.0557584984366, 141.256106202938 43.0556252464737, 141.256279679146 43.0545398174381, 141.25639949237 43.053789813404, 141.258059615558 43.0540129367756, 141.258164272651 43.0530118637402, 141.260040803875 43.0531532930767, 141.259644507529 43.0553953329698)) ^^http://www.opengis.net/ont/geosparql#wktLiteral