メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.987862775214 43.1010416464382, 142.987685560901 43.1011223333129, 142.987434482627 43.1011662204203, 142.987417913037 43.1011691404373, 142.987355465346 43.101179810943, 142.986043384578 43.1014029787249, 142.986062547437 43.1013681823452, 142.98641057056 43.1007729189419, 142.986856983077 43.1000111116144, 142.98707244817 43.0996395055299, 142.987189335243 43.0994387337646, 142.988615699863 43.0999672061226, 142.987862775214 43.1010416464382)) ^^http://www.opengis.net/ont/geosparql#wktLiteral