メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.767223332644 40.1915695191615, 141.766956548916 40.1916186793442, 141.766716031357 40.1916629828727, 141.766545358272 40.1912875914876, 141.76633230634 40.1908190110884, 141.76690336064 40.1906847703565, 141.767328337709 40.190570122826, 141.767995208318 40.19037808787, 141.768241672299 40.1902994143932, 141.768325941156 40.1903891327545, 141.768398049531 40.1905288574017, 141.768586815785 40.1907714417984, 141.767937156836 40.1912413705391, 141.767624451069 40.1915009435536, 141.767223332644 40.1915695191615)) ^^http://www.opengis.net/ont/geosparql#wktLiteral