メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.858135074113 43.3380894469889, 141.856841608849 43.3382848783621, 141.856615566351 43.3374739421836, 141.856475638727 43.3369939762561, 141.856406539449 43.3367490028848, 141.857999284416 43.3364951765181, 141.858537030965 43.3364115707216, 141.859093368845 43.3363262644153, 141.859626072328 43.3362412949281, 141.859648256284 43.3362907397261, 141.85995402339 43.3362373463367, 141.860034767803 43.3364611178398, 141.86023963535 43.3371413079867, 141.860398344806 43.3377204222734, 141.858135074113 43.3380894469889)) ^^http://www.opengis.net/ont/geosparql#wktLiteral