メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.269378083051 43.1073963026213, 141.268622207065 43.1067207978251, 141.267576381351 43.1058527746191, 141.267759409202 43.1057333787357, 141.268134094755 43.1054889635653, 141.268874941651 43.1050525916355, 141.269499640054 43.1055681714878, 141.270620717704 43.1065342247523, 141.270563447842 43.1065804333209, 141.269378083051 43.1073963026213)) ^^http://www.opengis.net/ont/geosparql#wktLiteral