メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.189297236857 35.3652007626057, 137.18913539163 35.3655284689926, 137.188100764256 35.3651408254445, 137.188205783867 35.3646146082649, 137.188424446914 35.3635469605608, 137.188775585049 35.3637423243699, 137.189557582743 35.3641412044009, 137.189773211176 35.3642332082146, 137.189297236857 35.3652007626057)) ^^http://www.opengis.net/ont/geosparql#wktLiteral