メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.889621281883 35.1339464528209, 136.890992029918 35.1339766672727, 136.890986279118 35.1343533549199, 136.890974508956 35.1347545368829, 136.890968405406 35.1351469293818, 136.890148109383 35.1351297516125, 136.890160823307 35.1355335954008, 136.889990163162 35.1355439761115, 136.889191569555 35.1355925479264, 136.888642753091 35.1356266969091, 136.888559552838 35.1350849365743, 136.888518780136 35.1347165210528, 136.888473168501 35.134321049316, 136.888416046621 35.133925481301, 136.889621281883 35.1339464528209)) ^^http://www.opengis.net/ont/geosparql#wktLiteral