メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.766781010459 43.2051187300868, 141.766751362682 43.2051476526366, 141.766465068399 43.2054570825258, 141.766149953731 43.2057938199235, 141.766131038531 43.2058151197572, 141.765114774457 43.2053167627249, 141.765249662549 43.2051644410651, 141.765452523179 43.2049571282939, 141.765711907971 43.2046833133592, 141.765742388655 43.2046524258581, 141.766479185463 43.2050140748613, 141.766504489913 43.2049935041087, 141.766781010459 43.2051187300868)) ^^http://www.opengis.net/ont/geosparql#wktLiteral