メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.056488222816 37.7503040610537, 139.056915101279 37.7502272876964, 139.056900150956 37.7504455774815, 139.056889306975 37.750542913942, 139.056848969756 37.7509054899312, 139.056806055193 37.7512907463903, 139.055452319348 37.7515532253268, 139.055094240934 37.751613338716, 139.054785844652 37.7506232244821, 139.05514475277 37.7505559284734, 139.055419644151 37.7505043719115, 139.055261441254 37.7499984234018, 139.056327819629 37.74978939483, 139.056488222816 37.7503040610537)) ^^http://www.opengis.net/ont/geosparql#wktLiteral