メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.339577785908 43.0942586549054, 141.340336763551 43.0943570386835, 141.34025167292 43.0946985094456, 141.34023650783 43.0947375620466, 141.340082420433 43.0952990335426, 141.33930157608 43.0951859857707, 141.339332962255 43.0950367173115, 141.33864431689 43.0949386066842, 141.338762916782 43.0944800961434, 141.338845393584 43.0941601962919, 141.339577785908 43.0942586549054)) ^^http://www.opengis.net/ont/geosparql#wktLiteral