メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.662289520893 33.2524008772527, 131.663583727728 33.2525809081345, 131.663473878446 33.2532209979037, 131.663404835931 33.2536976751894, 131.663328972589 33.2541705481608, 131.66323147987 33.2547155691422, 131.661895945988 33.254551836981, 131.66075455894 33.254427078183, 131.660069288069 33.2543194828598, 131.66024226327 33.2532906908814, 131.660452695148 33.2521594711924, 131.661117127029 33.2522464823561, 131.662289520893 33.2524008772527)) ^^http://www.opengis.net/ont/geosparql#wktLiteral