メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.405407834892 43.0108120564933, 144.405269187114 43.0107496132999, 144.40496456471 43.0110157757949, 144.404235690931 43.011640511073, 144.401419064935 43.0098428657455, 144.402133823454 43.0092033626559, 144.402780346434 43.0086627554698, 144.405695671711 43.0105538040711, 144.405407834892 43.0108120564933)) ^^http://www.opengis.net/ont/geosparql#wktLiteral