メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.407719020322 43.012648246346, 144.40687423764 43.0133452300525, 144.404235690931 43.011640511073, 144.40496456471 43.0110157757949, 144.405269187114 43.0107496132999, 144.405407834892 43.0108120564933, 144.406621376841 43.0116532508513, 144.407912514477 43.012465260522, 144.407719020322 43.012648246346)) ^^http://www.opengis.net/ont/geosparql#wktLiteral