メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.355103441777 43.0372383953781, 141.354475042864 43.0371939529227, 141.354126005849 43.0371642837053, 141.354190340686 43.0366564408506, 141.354252509541 43.0366074152117, 141.35462085264 43.0366015078946, 141.354678034675 43.036697744822, 141.354872936811 43.0369559746797, 141.355103441777 43.0372383953781)) ^^http://www.opengis.net/ont/geosparql#wktLiteral