メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.08860472544 39.6934472994286, 141.088034770995 39.6934664946485, 141.087799498856 39.692618155209, 141.088981455919 39.6927949008158, 141.089028506362 39.6929621766341, 141.089157821911 39.6930575270976, 141.089431731015 39.6931924236521, 141.089984417389 39.693386486585, 141.08860472544 39.6934472994286)) ^^http://www.opengis.net/ont/geosparql#wktLiteral