メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.409027354215 43.7316013625126, 142.40907002572 43.7321188478477, 142.407143188228 43.7322239835628, 142.405721425598 43.7323072629942, 142.405073498593 43.7323438897241, 142.405027057087 43.7313774263158, 142.406329421899 43.731312706264, 142.407039320455 43.7308389798602, 142.407051045714 43.7312330244087, 142.407078185187 43.7312369256291, 142.409000241323 43.73111495628, 142.409027354215 43.7316013625126)) ^^http://www.opengis.net/ont/geosparql#wktLiteral