メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.331033204194 43.0426253990124, 141.331027727585 43.042696880341, 141.330991977469 43.0429464047321, 141.330970493704 43.0431909097119, 141.330951023527 43.0433518083717, 141.330943807305 43.0433856491557, 141.33091510472 43.0436062546583, 141.329221402971 43.0434753982903, 141.32925778336 43.0432419152838, 141.329314862264 43.0428425493757, 141.329365210738 43.0425148660935, 141.329404143894 43.0421489719564, 141.329991527254 43.0421942057601, 141.330544330235 43.0422179188897, 141.331095777073 43.0422554737762, 141.331033204194 43.0426253990124)) ^^http://www.opengis.net/ont/geosparql#wktLiteral