メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.988527989313 43.5516557406137, 144.987660662491 43.5523579552436, 144.987272352436 43.5521099302145, 144.986344957739 43.5515635206274, 144.987227905043 43.5508389320121, 144.987587213298 43.551061668811, 144.987629810871 43.5510970380036, 144.987727705581 43.5511579428197, 144.988527989313 43.5516557406137)) ^^http://www.opengis.net/ont/geosparql#wktLiteral