メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.321212285217 43.1041013948315, 141.32160930291 43.1044924761677, 141.322315494301 43.105188195897, 141.321599620727 43.1055835994636, 141.321260717386 43.1057601802774, 141.320900443146 43.1059536104285, 141.320854960205 43.1059780675787, 141.320152355683 43.1052808296981, 141.31980243717 43.1049489943148, 141.319759429706 43.1049051113916, 141.319469334452 43.1046098390338, 141.319752223245 43.1044431412857, 141.320136175578 43.1042449850641, 141.320445825932 43.1040728769881, 141.320911894977 43.1038138482224, 141.321212285217 43.1041013948315)) ^^http://www.opengis.net/ont/geosparql#wktLiteral