White, long-necked bird with yellow legs flies over water.
The bird is flying over a lake.
The water that the bird is flying over could be something other than a lake.
exists e1 s1 s2 x1 x2 x3 x4.(ne_geo_white(x1) & over(e1,x4) & n_water(x4) & Actor(e1,x1) & v_fly(e1) & rel(x1,x2) & with(x2,x3) & n_leg(x3) & a_yellow(s2) & Theme(s2,x3) & n_bird(x2) & a_long-necked(s1) & Theme(s1,x2))
exists e1 x1 x2.(n_bird(x1) & over(e1,x2) & n_lake(x2) & Actor(e1,x1) & v_fly(e1))