メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.74520209997 43.1630943857375, 141.745218974758 43.1632505228244, 141.744961344387 43.163128839424, 141.744914786629 43.1631068301153, 141.744768119716 43.1617302401895, 141.744766611473 43.1616799467874, 141.74466158289 43.1609181566992, 141.744648727554 43.1607815892376, 141.744647426468 43.1607705421252, 141.745130539796 43.1607556577006, 141.745098957676 43.1607701468945, 141.745044673078 43.1608116838808, 141.745005883197 43.160949148254, 141.745012539055 43.1612437907637, 141.745028370008 43.1616318724491, 141.745069390215 43.1618540166215, 141.745134207686 43.1624654037372, 141.74520209997 43.1630943857375)) ^^http://www.opengis.net/ont/geosparql#wktLiteral