メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.355996602383 43.0943515031119, 141.35643287168 43.0944034353267, 141.356475170613 43.0944115017553, 141.357034389727 43.0944886540571, 141.35676075714 43.0956319402986, 141.356149946942 43.0955515007977, 141.355712301702 43.0954947055896, 141.355183407757 43.0954303018302, 141.355458336673 43.0942919495331, 141.355996602383 43.0943515031119)) ^^http://www.opengis.net/ont/geosparql#wktLiteral