メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.139469341743 38.9308331323756, 141.139486894318 38.9310114315699, 141.139493442491 38.9314018162805, 141.139493778834 38.9314225778422, 141.139391918137 38.9319151584496, 141.138107443531 38.9321764571401, 141.137945669429 38.9318286340302, 141.137707223056 38.931271557947, 141.137583700313 38.9310123852697, 141.138378518823 38.9308304928807, 141.138978300676 38.9307014671892, 141.138896024222 38.9305422697699, 141.139419753642 38.9304237166776, 141.139433462748 38.9304687245106, 141.139463241666 38.9307713546859, 141.139469341743 38.9308331323756)) ^^http://www.opengis.net/ont/geosparql#wktLiteral