メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.327297915025 43.0897480360712, 141.326775127369 43.0899781478582, 141.326316642566 43.0901881721042, 141.325868380948 43.0903945493829, 141.324613850073 43.0890205143684, 141.324721656521 43.0889282023081, 141.324768610118 43.0888880029089, 141.325017542556 43.088727418019, 141.325399460623 43.0884143808857, 141.32560217773 43.0882702996633, 141.325618634236 43.0882607978492, 141.325837848463 43.0881107309149, 141.326511303836 43.0888797989007, 141.326970484112 43.089404155859, 141.327297915025 43.0897480360712)) ^^http://www.opengis.net/ont/geosparql#wktLiteral