メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.426082350634 43.0995967828233, 141.426279105403 43.0998683353348, 141.426776887165 43.1005446883298, 141.426286843612 43.10076030234, 141.425162029303 43.1012550399847, 141.424779525011 43.1014233177835, 141.423883210899 43.1018175737945, 141.423293689354 43.1010846339877, 141.423061370784 43.1008034664132, 141.422808216829 43.1005087849781, 141.422529055659 43.1001570199038, 141.423871364744 43.0996176746237, 141.425046918828 43.0991451870405, 141.425062935186 43.0991387617221, 141.425598746 43.0989234834223, 141.425875137539 43.0993108089, 141.426082350634 43.0995967828233)) ^^http://www.opengis.net/ont/geosparql#wktLiteral