メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.226712497795 36.6903719737239, 137.227258959608 36.6903960588899, 137.227406997758 36.6904026020848, 137.22779601285 36.6904197228178, 137.227766827954 36.6906658040816, 137.227718226729 36.6910755188866, 137.227682500306 36.6915374672288, 137.226595373312 36.6914540238497, 137.225062413318 36.6913317819798, 137.225058939332 36.6912965111612, 137.225090798792 36.6909928383672, 137.225116775524 36.6908748961533, 137.225173242453 36.6902965596225, 137.226413749528 36.6903588164788, 137.226712497795 36.6903719737239)) ^^http://www.opengis.net/ont/geosparql#wktLiteral