メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.723549486816 35.1690213951957, 136.723625734634 35.1694161707678, 136.72370585811 35.1699106057835, 136.723433272083 35.1699469300547, 136.723151687358 35.1699899108185, 136.722145279376 35.1701238898143, 136.722075885394 35.1697944870191, 136.72199712675 35.1693742797218, 136.721963735635 35.1692218375688, 136.721792604491 35.1683776388629, 136.722799167021 35.1682504941284, 136.722541875389 35.1669337377615, 136.723101560469 35.1668541048941, 136.723549486816 35.1690213951957)) ^^http://www.opengis.net/ont/geosparql#wktLiteral