メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.520594449274 39.2237774334519, 140.52056842158 39.2231915352262, 140.521126816983 39.2226675152681, 140.521284639813 39.222523732209, 140.522016497457 39.2230321930755, 140.52157388201 39.2232683310734, 140.521251459221 39.2234454565958, 140.520594449274 39.2237774334519)) ^^http://www.opengis.net/ont/geosparql#wktLiteral