メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.345447220549 43.1155159309297, 141.345369646019 43.115893308395, 141.345318274 43.1161215261764, 141.345301204892 43.1161917152376, 141.345228699137 43.1164988799317, 141.343475956014 43.1162760605581, 141.343556835395 43.1158901282079, 141.343581838548 43.1157704935359, 141.3436034305 43.1156672173164, 141.34367989409 43.1153005898941, 141.343771056173 43.1148748652529, 141.344806750609 43.1150068457758, 141.345553472088 43.1150947560685, 141.345447220549 43.1155159309297)) ^^http://www.opengis.net/ont/geosparql#wktLiteral