メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.345790566995 43.7761560643013, 142.346022509401 43.7765542016831, 142.346029059077 43.7765654475043, 142.344494735583 43.7770086313787, 142.344266233488 43.7765823593526, 142.344047246104 43.7761629700957, 142.345565388098 43.7757283500784, 142.345808124317 43.7761511617069, 142.345790566995 43.7761560643013)) ^^http://www.opengis.net/ont/geosparql#wktLiteral