メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.877837925478 35.1141133219365, 138.878007512634 35.1142369548443, 138.877881532159 35.1143044654045, 138.877834358014 35.1143709553615, 138.877887910991 35.114655736502, 138.877933385349 35.1149447679857, 138.876875213617 35.1150639236166, 138.876824367085 35.1147801194269, 138.876775620048 35.1145147598847, 138.876736331275 35.1142377517833, 138.876711494963 35.1139997142034, 138.877588558129 35.1139002831645, 138.877837925478 35.1141133219365)) ^^http://www.opengis.net/ont/geosparql#wktLiteral