メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.329256841761 43.1189385525861, 141.329512692853 43.119188233085, 141.329720549183 43.1194119285308, 141.330205931118 43.1199065750652, 141.329778273927 43.1201271235582, 141.329430458363 43.1203243316689, 141.329082839801 43.1205146493566, 141.328711510717 43.1207174322786, 141.328018725742 43.1200014769796, 141.327329030551 43.119310929642, 141.328041015285 43.1189271352661, 141.328388440307 43.1187429387357, 141.32882018037 43.1185122305461, 141.329191933617 43.1188751575504, 141.329256841761 43.1189385525861)) ^^http://www.opengis.net/ont/geosparql#wktLiteral