メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.890615900739 43.0109348150944, 142.89012896658 43.011331591245, 142.889051035444 43.0106876173068, 142.889009181598 43.0106626020187, 142.889441636047 43.0102609284251, 142.89006685959 43.0096983173979, 142.89071535172 43.0091581492384, 142.890966498518 43.0093396735427, 142.890986728908 43.0093543295072, 142.891072413523 43.0092861933046, 142.891845457162 43.0098530880798, 142.890754786799 43.0108216530986, 142.890615900739 43.0109348150944)) ^^http://www.opengis.net/ont/geosparql#wktLiteral