メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.503220239454 35.6405607202924, 139.503185521086 35.6405803053793, 139.502761310333 35.6409174268338, 139.502546212045 35.6407745224025, 139.502486202818 35.6406732415653, 139.502379446675 35.640616401336, 139.502286355485 35.6404578175027, 139.502220989578 35.6403072314607, 139.502134795716 35.6401754225708, 139.502331012924 35.6400670732068, 139.502903903713 35.6395490860088, 139.502993774609 35.6396987889627, 139.503381618106 35.6404697007697, 139.503220239454 35.6405607202924)) ^^http://www.opengis.net/ont/geosparql#wktLiteral