メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.725208886867 35.4273466895711, 136.725350310713 35.4285957528212, 136.724733307685 35.4286287046759, 136.723743011192 35.428715069911, 136.723302953869 35.4287447898747, 136.722824570787 35.4287821497261, 136.722556188288 35.4288052802016, 136.721693252439 35.4288699531143, 136.721095260263 35.4289186281098, 136.720952231587 35.4277002222697, 136.72095067815 35.4276853582111, 136.720891733453 35.42714878608, 136.722991694233 35.4269852585821, 136.724659548294 35.4268458924774, 136.725127732616 35.4268070801807, 136.725208886867 35.4273466895711)) ^^http://www.opengis.net/ont/geosparql#wktLiteral