メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.419951685356 34.7611067892228, 137.420269730277 34.7618060420075, 137.420245780851 34.7618167973859, 137.419338905469 34.7621594278505, 137.419316785869 34.7621684888786, 137.418233886769 34.7625762708139, 137.417816807373 34.7627303881192, 137.417365730904 34.7629172523866, 137.416743897764 34.7621486247517, 137.416651278339 34.7620340191628, 137.416537322149 34.761898047727, 137.417580405172 34.7615244501637, 137.418692357919 34.7611187211883, 137.419767810206 34.7607116476985, 137.419928101161 34.7610544397881, 137.419951685356 34.7611067892228)) ^^http://www.opengis.net/ont/geosparql#wktLiteral