メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.786369768292 40.8073808627458, 140.785571011939 40.8087639061816, 140.784943591582 40.8098562296761, 140.784327584144 40.810909294545, 140.78272203768 40.8100535521905, 140.782185181615 40.809767454107, 140.782463146267 40.8091113529895, 140.782718911109 40.8085294686984, 140.783080393518 40.8077069368286, 140.783184360143 40.8074339961255, 140.783634703946 40.8062925012924, 140.783620401105 40.8062889072482, 140.783828703172 40.8057418974538, 140.785376230792 40.8061886062314, 140.78668330626 40.806838038253, 140.786369768292 40.8073808627458)) ^^http://www.opengis.net/ont/geosparql#wktLiteral