メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.01943289797 34.8863588224306, 137.019207030452 34.8860911297723, 137.01873838024 34.8860363353916, 137.018779922467 34.8857433980453, 137.018545967663 34.8854292109663, 137.018703070764 34.8853423498723, 137.018562144254 34.8851684292635, 137.018535043745 34.8847442687372, 137.019141520113 34.8847155603311, 137.019179521533 34.884745186937, 137.01921806732 34.884793688878, 137.020092340157 34.8859478094195, 137.01943289797 34.8863588224306)) ^^http://www.opengis.net/ont/geosparql#wktLiteral