メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.617296567335 35.4360259252102, 139.617543971663 35.4360841105183, 139.617727609251 35.4361346122408, 139.617846504416 35.4361673217772, 139.618051383884 35.4362236692238, 139.617936114305 35.43645539378, 139.6178460436 35.4366587834323, 139.616832977705 35.4363632922772, 139.616920050282 35.4361471871823, 139.617003661653 35.4359390332045, 139.617296567335 35.4360259252102)) ^^http://www.opengis.net/ont/geosparql#wktLiteral