メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.345855066088 43.0349030878344, 141.345799327786 43.0352712482378, 141.345758367491 43.0355535815657, 141.345739572131 43.0356910697007, 141.345667764272 43.0362459696634, 141.344178309922 43.0361505659631, 141.344258452851 43.035596998602, 141.344284070827 43.0354521810369, 141.344325000754 43.0351723794166, 141.344351668109 43.0349562541103, 141.344373417172 43.0347811636469, 141.345842122029 43.0348639516963, 141.345855066088 43.0349030878344)) ^^http://www.opengis.net/ont/geosparql#wktLiteral