メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.778011082545 43.2124476300418, 141.777805640373 43.2126798544888, 141.777488913964 43.2125179172977, 141.777372199865 43.2123104582638, 141.777398065928 43.2122917164175, 141.77726994061 43.2122234606628, 141.777363775687 43.2121125893245, 141.776058552389 43.2114371051135, 141.776789903538 43.2107178511237, 141.778680674862 43.211699980402, 141.778011082545 43.2124476300418)) ^^http://www.opengis.net/ont/geosparql#wktLiteral