メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.383647622039 42.9894703841219, 144.381737189704 42.9900440439929, 144.382250076517 42.988504488494, 144.383887845819 42.9887778789227, 144.383883713055 42.9887913186619, 144.383647622039 42.9894703841219)) ^^http://www.opengis.net/ont/geosparql#wktLiteral