メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.341859414005 40.6773014367568, 141.341784548615 40.6778294719497, 141.340748864383 40.677738757831, 141.340552045164 40.6787787056349, 141.340223187805 40.6804080083691, 141.339917245105 40.6820632420512, 141.33783392273 40.6818125872769, 141.338150426886 40.6800448074868, 141.338501735438 40.6783720721879, 141.338870486736 40.6769598702857, 141.341859414005 40.6773014367568)) ^^http://www.opengis.net/ont/geosparql#wktLiteral