メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.941197240304 35.738021243365, 137.940764284333 35.7380518886427, 137.940609715577 35.7364853732452, 137.940873474516 35.7364172833678, 137.941048027642 35.7370956185981, 137.941095086994 35.7372456166414, 137.941159676681 35.7373956949512, 137.94116747845 35.7375276581276, 137.941197240304 35.738021243365)) ^^http://www.opengis.net/ont/geosparql#wktLiteral