メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.34469068437 43.0437345158322, 141.344684105884 43.0438623946736, 141.344643433876 43.0440591373387, 141.344622608478 43.0441972414094, 141.344579693969 43.0445529118022, 141.343141105717 43.0444603556177, 141.343147682038 43.0443393701942, 141.343193319174 43.0441184744696, 141.343223556538 43.0438231876818, 141.343249330475 43.0436747847675, 141.343314479147 43.0432552195921, 141.344736680007 43.0433321706661, 141.344719137218 43.0435601820556, 141.34469068437 43.0437345158322)) ^^http://www.opengis.net/ont/geosparql#wktLiteral