メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.375922724234 43.0920011580814, 141.375813624234 43.0924784861645, 141.375697198409 43.0929713704466, 141.375267053112 43.0929131622212, 141.375090261371 43.0928892292904, 141.374239725999 43.0927740828163, 141.37430184246 43.0924966208132, 141.37435794423 43.0922774151736, 141.374456539323 43.0917972647206, 141.374581673317 43.0912998756263, 141.376051700452 43.0915094235376, 141.375922724234 43.0920011580814)) ^^http://www.opengis.net/ont/geosparql#wktLiteral