メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.0472518771 35.4224047807397, 137.047235019805 35.4224448692506, 137.047040189262 35.4233529126496, 137.047001599565 35.4235810428811, 137.046968640432 35.4236883692982, 137.045538001938 35.4234766393128, 137.045623902624 35.4230561979346, 137.045697703243 35.4226777516139, 137.045570894549 35.4219537497593, 137.046108306204 35.4219076405424, 137.046150372569 35.4218738100256, 137.046803057376 35.4218252436389, 137.046960731181 35.4216464592271, 137.047260271337 35.4216270427188, 137.047346146507 35.4219608965692, 137.0472518771 35.4224047807397)) ^^http://www.opengis.net/ont/geosparql#wktLiteral