メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.355698822438 43.1190725516237, 141.355602466176 43.1194468586052, 141.355616163159 43.11944900399, 141.355464489117 43.1200162122379, 141.355302923114 43.1199961096302, 141.353990864308 43.1197003698469, 141.354111947616 43.1192110612239, 141.354205730747 43.1188373104559, 141.355698822438 43.1190725516237)) ^^http://www.opengis.net/ont/geosparql#wktLiteral