メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.307088572633 43.1003229871007, 141.307663065494 43.1004928481897, 141.308426698381 43.1007460533705, 141.308214581994 43.1009032505546, 141.307416909128 43.1014799205443, 141.306693408274 43.1020130296458, 141.306082191566 43.101446631197, 141.305759496801 43.1011544992305, 141.303900178892 43.0994384674132, 141.304069669526 43.0993386650187, 141.304590309987 43.0995142859764, 141.305014032325 43.0996579485336, 141.307088572633 43.1003229871007)) ^^http://www.opengis.net/ont/geosparql#wktLiteral