メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.371727157973 43.0283472025006, 141.371858385722 43.0288390447084, 141.371336003839 43.0288807523586, 141.370510113615 43.028943194635, 141.370102130404 43.02897272006, 141.369201950176 43.0290378596014, 141.368299702702 43.0291033542494, 141.368249697395 43.0287859198375, 141.368168416604 43.0281620249249, 141.36815700417 43.0280819011611, 141.369065230322 43.0279995033082, 141.370400062191 43.0279018797401, 141.371587390327 43.0278291312297, 141.371663935257 43.028088182421, 141.371727157973 43.0283472025006)) ^^http://www.opengis.net/ont/geosparql#wktLiteral