メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.350236019701 43.7871439511272, 142.350747753763 43.7875137783021, 142.350808859921 43.7874713550655, 142.351422172044 43.7879059962057, 142.351344010109 43.7879653483686, 142.350809965124 43.7883327829899, 142.350776571864 43.7883610648874, 142.350204582846 43.7887744336037, 142.34931950613 43.7881425068851, 142.349944667879 43.7876943040668, 142.349710838205 43.7875214641322, 142.349130985524 43.7871101156527, 142.349650807912 43.7867209876122, 142.349665471231 43.7867103388355, 142.350236019701 43.7871439511272)) ^^http://www.opengis.net/ont/geosparql#wktLiteral