メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.382898249241 34.7587562761064, 137.382596857288 34.7592819185135, 137.382296548811 34.7597820632357, 137.382094444689 34.7601201905615, 137.381357056935 34.7599942755665, 137.381788730379 34.758983718667, 137.382028780638 34.7584133925143, 137.382414416769 34.7575818027127, 137.383184077521 34.7579173926743, 137.383346417437 34.7579928909566, 137.383270791193 34.7581250064795, 137.382898249241 34.7587562761064)) ^^http://www.opengis.net/ont/geosparql#wktLiteral