メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.394030346939 43.0404809812851, 141.393518408198 43.0407794340803, 141.393379580211 43.0408822040164, 141.392888471817 43.0411715967645, 141.392440072202 43.0407896505051, 141.391907426194 43.0403230266514, 141.392516428949 43.0399398561916, 141.392818586322 43.039764955499, 141.392980123556 43.0396700225233, 141.393765533225 43.0402801775284, 141.393911131318 43.0403731175045, 141.39398849376 43.0404431117114, 141.394030346939 43.0404809812851)) ^^http://www.opengis.net/ont/geosparql#wktLiteral