メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.987189335243 43.0994387337646, 142.98707244817 43.0996395055299, 142.986856983077 43.1000111116144, 142.98641057056 43.1007729189419, 142.986314729576 43.10073218221, 142.984594089117 43.1001345373553, 142.984523396899 43.1001099533409, 142.984010670402 43.0999318635562, 142.984266122274 43.0995237157167, 142.984575633279 43.0990457343613, 142.984843052184 43.09853553062, 142.985369059398 43.0987415227662, 142.98675927756 43.0992675079771, 142.987132937765 43.0994178572822, 142.987189335243 43.0994387337646)) ^^http://www.opengis.net/ont/geosparql#wktLiteral