メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.005495786063 43.5642402037497, 145.005107169711 43.563980363194, 145.004655152594 43.5636872766827, 145.004796640224 43.5635794769303, 145.005782100252 43.5628223170787, 145.006612696254 43.5633587771419, 145.00601597953 43.5638276811587, 145.005624789273 43.5641385402512, 145.005495786063 43.5642402037497)) ^^http://www.opengis.net/ont/geosparql#wktLiteral