メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.131402198155 43.6561566159372, 145.130888392687 43.6561467302288, 145.13003819536 43.6561224041794, 145.12997108161 43.6561205113917, 145.129969649937 43.6560055055207, 145.129969017664 43.6559598846894, 145.130028276303 43.6559595499332, 145.129986018867 43.6551772659903, 145.130035228279 43.6551815087459, 145.131340195611 43.6551563493036, 145.131526626188 43.6551621567208, 145.131518488871 43.6551864122568, 145.131408175075 43.6560629062502, 145.131402198155 43.6561566159372)) ^^http://www.opengis.net/ont/geosparql#wktLiteral