メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.721963735635 35.1692218375688, 136.72199712675 35.1693742797218, 136.722075885394 35.1697944870191, 136.722145279376 35.1701238898143, 136.72110224828 35.1702666802586, 136.72039933458 35.170374235961, 136.720127430318 35.1694926900092, 136.720051160242 35.1694974795531, 136.720029040944 35.1693940907323, 136.719850863228 35.1690730885687, 136.719722656797 35.1688597338432, 136.719622108856 35.1686777464696, 136.720779119142 35.1685241234331, 136.721759241048 35.1683855450631, 136.721792604491 35.1683776388629, 136.721963735635 35.1692218375688)) ^^http://www.opengis.net/ont/geosparql#wktLiteral