メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.359467801104 43.0910745571791, 141.359382421134 43.091436644822, 141.359252735151 43.091928916246, 141.359150372525 43.0923567686266, 141.358823894385 43.0923048558947, 141.358161975364 43.0922236046288, 141.357580163719 43.0921439581208, 141.357801065204 43.0913187631726, 141.357823271609 43.0912301829889, 141.357899702747 43.0908571251708, 141.357987990896 43.0905331792002, 141.358890885186 43.0906581549785, 141.359537343897 43.0907458227819, 141.359467801104 43.0910745571791)) ^^http://www.opengis.net/ont/geosparql#wktLiteral