メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.42527903075 43.0537321562592, 141.425655360937 43.0540756858732, 141.425448596327 43.0545700258851, 141.425329144846 43.0546383007631, 141.424272417942 43.0552867292633, 141.423714789411 43.0556185356703, 141.423105046458 43.0559813308294, 141.42274840638 43.0556501025646, 141.42233429999 43.0552635295927, 141.421961366004 43.0549108005309, 141.42153456963 43.0545485369949, 141.422665000955 43.0538760508265, 141.423361212886 43.0534287125855, 141.423845190815 43.0531669881081, 141.424382545582 43.0528364422729, 141.42527903075 43.0537321562592)) ^^http://www.opengis.net/ont/geosparql#wktLiteral