メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.464322841673 40.5967176589324, 140.464243986951 40.5969019637573, 140.464202582702 40.5969859835583, 140.464165571918 40.5970270957075, 140.464135268275 40.5970486011863, 140.464055089715 40.5969957850876, 140.463894572765 40.5969403202486, 140.463620567647 40.5968464286662, 140.463407460917 40.5967739084057, 140.463235704492 40.5967437356818, 140.463196398931 40.5968324054255, 140.462821740898 40.5967579600966, 140.462824472513 40.5966524272042, 140.462623249742 40.5966385558081, 140.462768311182 40.596271948587, 140.463911700244 40.5966011661192, 140.464322841673 40.5967176589324)) ^^http://www.opengis.net/ont/geosparql#wktLiteral