メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.343592851134 43.75002537957, 142.343865239262 43.7495619639189, 142.344543360339 43.7497706893068, 142.346876134735 43.750449646299, 142.346417677828 43.7510487203625, 142.345820229133 43.7518294293087, 142.345677547102 43.7520158670626, 142.344978213468 43.7517952804815, 142.343922299428 43.7514561450134, 142.342931598616 43.7511610202799, 142.343137331558 43.7508035133081, 142.343358233934 43.7504278839042, 142.343592851134 43.75002537957)) ^^http://www.opengis.net/ont/geosparql#wktLiteral