メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.997557460318 43.5518943475805, 144.998204148583 43.5514028370923, 144.998547302784 43.5516265258233, 144.997272029648 43.552625110397, 144.997344599337 43.5526816225037, 144.997235104546 43.5527953602256, 144.997175034585 43.5528478566666, 144.996732224285 43.5525673864358, 144.996804525144 43.5525074593567, 144.996908575081 43.5524227896785, 144.996338934283 43.55205332161, 144.996985954563 43.551517860164, 144.997557460318 43.5518943475805)) ^^http://www.opengis.net/ont/geosparql#wktLiteral