メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.458975382983 43.0534978852154, 144.457753031879 43.0528499432882, 144.457781549052 43.052810924309, 144.461263161135 43.0510144456751, 144.461332048162 43.0510901212822, 144.461745662566 43.0514508445697, 144.462061672231 43.0517212553464, 144.462272291959 43.0518662026457, 144.458975382983 43.0534978852154)) ^^http://www.opengis.net/ont/geosparql#wktLiteral