メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.995827113178 43.5586338124907, 144.99534893721 43.5590140931653, 144.994256804347 43.5582382805304, 144.994520025811 43.558030248087, 144.994574136496 43.5579868270127, 144.995043544541 43.5582944426691, 144.995111516564 43.5583390084374, 144.995438808405 43.5585534557094, 144.995567550801 43.5584671734192, 144.995827113178 43.5586338124907)) ^^http://www.opengis.net/ont/geosparql#wktLiteral