メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.35396199226 43.1098116733158, 141.354807613985 43.1099244484583, 141.354718870889 43.1102568952969, 141.354618439344 43.110666681344, 141.354488066188 43.1111868428585, 141.354001329466 43.111106965199, 141.353647963955 43.1110569566431, 141.353578838109 43.1110448848061, 141.353044917923 43.1109623151108, 141.352975854124 43.1109525639777, 141.353198037203 43.1100878734631, 141.353203026527 43.1100682918878, 141.353241073303 43.1099213233484, 141.353294475192 43.1097153295879, 141.353731248784 43.1097718290897, 141.35396199226 43.1098116733158)) ^^http://www.opengis.net/ont/geosparql#wktLiteral