メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.728610894676 35.182228978377, 136.728220362024 35.1822427034709, 136.72818044771 35.181760452824, 136.728147357405 35.1815330829354, 136.728128343905 35.1814157613723, 136.728118257893 35.1811215039278, 136.72817315367 35.1811217029875, 136.728160621461 35.1809556745848, 136.729612660098 35.1809197333541, 136.729601167451 35.1809916629346, 136.729586780387 35.1811155529739, 136.729558367864 35.1812957295957, 136.729557282644 35.1814985398957, 136.729596826969 35.1818029041672, 136.729645149753 35.1822061725433, 136.728610894676 35.182228978377)) ^^http://www.opengis.net/ont/geosparql#wktLiteral