メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.045464874557 37.92647307192, 139.044923885432 37.9266259394393, 139.044608215273 37.9253455814418, 139.044571835903 37.9251835692208, 139.045096910902 37.9250855433342, 139.045099702102 37.9250963694741, 139.045261453101 37.9257160455682, 139.045464874557 37.92647307192)) ^^http://www.opengis.net/ont/geosparql#wktLiteral