メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.474118580865 43.7227563699287, 143.47519921196 43.7245094259796, 143.47641173641 43.7261084407869, 143.477547833469 43.727921629285, 143.478978310149 43.7295778616536, 143.480788463833 43.7313727743157, 143.482440836588 43.7327279830857, 143.483891763257 43.7338194384674, 143.484403613665 43.7350313346027, 143.483968984905 43.7370800424502, 143.483236383531 43.7390817920347, 143.482729143615 43.7406117376419, 143.481980848401 43.7424391453552, 143.473391654302 43.7404017751808, 143.470704901434 43.7396108007893, 143.47237514468 43.7349721886051, 143.470937181923 43.7346000439919, 143.473180720527 43.7298908762476, 143.471057259406 43.7293225280707, 143.474118580865 43.7227563699287)) ^^http://www.opengis.net/ont/geosparql#wktLiteral