メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.420731795239 43.766295066114, 142.420229738279 43.7663172192541, 142.419719654407 43.7663452012602, 142.41927224919 43.7663769039895, 142.418720954277 43.7664011622004, 142.418221591185 43.7664252360145, 142.417706088626 43.7664376591387, 142.417685862292 43.7664388298167, 142.417222856784 43.7664656072174, 142.41664830723 43.7664897836884, 142.416551637949 43.7655266510037, 142.417110013299 43.7654869215358, 142.41759866693 43.7654784265518, 142.418106025437 43.7654368326481, 142.418621463673 43.7654049478297, 142.419147680017 43.765384716814, 142.419641670748 43.7653606466152, 142.420141011444 43.765336565499, 142.420653772985 43.7653066088733, 142.420731795239 43.766295066114)) ^^http://www.opengis.net/ont/geosparql#wktLiteral