メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.365090233609 43.0966971022501, 141.365540612637 43.096763947337, 141.36609225178 43.0968365648563, 141.365794761874 43.0980409972057, 141.36522748412 43.09796720333, 141.364790435413 43.09790714195, 141.364259985059 43.0978419967453, 141.364395122659 43.0972826807113, 141.364478112314 43.0969785274885, 141.364566859911 43.0966277229222, 141.365090233609 43.0966971022501)) ^^http://www.opengis.net/ont/geosparql#wktLiteral