メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.464649352561 43.0413497839457, 144.463509075156 43.0414321346102, 144.463726348253 43.041304645124, 144.463936885029 43.0411658920106, 144.464315273603 43.0409810598472, 144.464619526064 43.0408888052292, 144.465153048112 43.0408533640377, 144.465741340522 43.0408052537919, 144.466442350825 43.0407562932123, 144.46649511998 43.0411138671886, 144.466357414638 43.0412195654799, 144.465471664565 43.0412930633634, 144.464649352561 43.0413497839457)) ^^http://www.opengis.net/ont/geosparql#wktLiteral