メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.4611160548 43.0377429492729, 144.460030119772 43.03800727632, 144.459583750359 43.0369560054072, 144.459003456162 43.0356720762678, 144.461220229707 43.0352160551402, 144.462249002363 43.0374691936825, 144.4611160548 43.0377429492729)) ^^http://www.opengis.net/ont/geosparql#wktLiteral