メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.377779943689 34.8271419333639, 137.377765363216 34.8274737606166, 137.376752806879 34.8274636668236, 137.376677481129 34.8274664021258, 137.376701660641 34.8259219428567, 137.377815399634 34.8256391490035, 137.377791095714 34.8265604329763, 137.377779943689 34.8271419333639)) ^^http://www.opengis.net/ont/geosparql#wktLiteral