メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.798625410133 34.7676684039106, 135.798255318837 34.7676687811885, 135.79779256759 34.767596178591, 135.797397773838 34.7676034144421, 135.79736498135 34.7665911332092, 135.798105104779 34.766619400781, 135.79825768461 34.7666895192665, 135.798582615434 34.7669043034211, 135.798625410133 34.7676684039106)) ^^http://www.opengis.net/ont/geosparql#wktLiteral