メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.368002129336 43.8327229888945, 142.366819430995 43.8336238437677, 142.366130563677 43.833319953825, 142.365473304986 43.8330142704532, 142.364738172086 43.8326769626683, 142.364358392782 43.8324836707186, 142.363813167879 43.8322482773978, 142.365474225059 43.8309402751904, 142.366772246959 43.8318456865559, 142.368002129336 43.8327229888945)) ^^http://www.opengis.net/ont/geosparql#wktLiteral