メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.335753265191 37.363715523721, 140.335699878387 37.3641501133791, 140.335336037429 37.3641378560126, 140.335328076542 37.3638015218397, 140.335753265191 37.363715523721)) ^^http://www.opengis.net/ont/geosparql#wktLiteral