Which city lies at the confluence of the Blue Nile and the White Nile?
which city lies at the confluence of the blue nile and the white nile
FreebaseQA-train-2907.P0 FreebaseQA-train-2907.P1
blue nile white nile
blue nile white nile
m.014wlv m.01ccyn
geography.river.cities geography.river.cities
m.04d_m
khartoum
m.04d_m
khartoum