メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.352475230345 43.0621523578801, 141.353254207121 43.062248279472, 141.353130050169 43.0628367384614, 141.352972939226 43.0634023639543, 141.352233114857 43.0632976752168, 141.351414577951 43.0631972164054, 141.3515658139 43.0626013761925, 141.351697673014 43.0620513793255, 141.351797791118 43.0616387675776, 141.352573889894 43.0617341786943, 141.352475230345 43.0621523578801)) ^^http://www.opengis.net/ont/geosparql#wktLiteral