メタデータ名 C4837
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.755823331598 43.1917178349499, 141.755291801554 43.1914430888209, 141.75493123581 43.1912558647235, 141.756258561499 43.1898424455846, 141.757174825252 43.1902918504355, 141.755823331598 43.1917178349499)) ^^http://www.opengis.net/ont/geosparql#wktLiteral