メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.945656101623 37.7904335820082, 140.945295903389 37.790546789293, 140.944957291966 37.7899043498787, 140.945743977046 37.7899761932569, 140.946036832345 37.7900038393746, 140.946224800409 37.7900048802776, 140.946544343038 37.7899548419436, 140.946901577614 37.7898630562253, 140.947088259217 37.7897783700838, 140.947280236991 37.7896978575364, 140.947439534268 37.789638349902, 140.947547459274 37.7896428203907, 140.947652097471 37.7896528108341, 140.947784026047 37.7897377237269, 140.945656101623 37.7904335820082)) ^^http://www.opengis.net/ont/geosparql#wktLiteral