メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.32492275213 43.0595912265054, 141.324777456178 43.0601640781406, 141.324626799923 43.0607806301362, 141.323246188584 43.0605848349993, 141.323426195079 43.0603509719277, 141.323477796844 43.0602364023037, 141.323533188309 43.0600294502297, 141.323537194757 43.059999030298, 141.323693188513 43.05942352508, 141.324242184613 43.0595002697067, 141.32492275213 43.0595912265054)) ^^http://www.opengis.net/ont/geosparql#wktLiteral