メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.429841875893 39.293978802138, 140.428221162521 39.2941020986071, 140.42793521204 39.294106451917, 140.427960202581 39.2932258723636, 140.428579043667 39.2931567363235, 140.428597073175 39.2932185880797, 140.428547338939 39.2933467782577, 140.429817541014 39.2939501464024, 140.429841875893 39.293978802138)) ^^http://www.opengis.net/ont/geosparql#wktLiteral