メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.162410080648 35.0805038638454, 137.161162342351 35.080629581081, 137.161118084051 35.0803211124102, 137.161986229358 35.0802386181107, 137.161947224988 35.0798849378261, 137.162216555548 35.0799360092758, 137.162790049305 35.0800184333786, 137.162809832065 35.0802837283251, 137.162387397515 35.0803261078614, 137.162410080648 35.0805038638454)) ^^http://www.opengis.net/ont/geosparql#wktLiteral