メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.3550628981 37.3704794913623, 140.353367136114 37.3709004854855, 140.352692855073 37.3697583451321, 140.353127364251 37.369665761328, 140.355264283 37.3691556732916, 140.355425667873 37.3695919962886, 140.355493440279 37.3697752966981, 140.354857134772 37.3699393172109, 140.3550628981 37.3704794913623)) ^^http://www.opengis.net/ont/geosparql#wktLiteral