メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.636380160397 43.9424104656697, 141.637414083124 43.943249469916, 141.637960029215 43.9436599482777, 141.638107026225 43.9437792523154, 141.638434565816 43.9440449766424, 141.637441838751 43.9446973384603, 141.636450828224 43.9438602974594, 141.63541292051 43.9430305286127, 141.635391804569 43.9430114247839, 141.635297936721 43.9429265870448, 141.635265444259 43.9428121492401, 141.635266923697 43.9426687229124, 141.635527932026 43.9421595837817, 141.635643527854 43.9418264088615, 141.635816059103 43.9419698318654, 141.636380160397 43.9424104656697)) ^^http://www.opengis.net/ont/geosparql#wktLiteral