メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.771937585033 43.3461141499086, 141.771708106614 43.3462233180855, 141.7515237328 43.3491872770206, 141.7501833973 43.3445888453708, 141.750164656617 43.3445593673076, 141.750168400743 43.3445374418848, 141.74942550792 43.3419885949226, 141.75253840534 43.3414945683895, 141.75606023507 43.3409579901109, 141.762970384825 43.3398777691788, 141.767267535509 43.3391950050518, 141.769927512001 43.338797906348, 141.770672481988 43.3413711581572, 141.771334519232 43.3437944715189, 141.771937585033 43.3461141499086)) ^^http://www.opengis.net/ont/geosparql#wktLiteral