A large white bird swoops over water.
A bird flying
The bird could be falling rather than flying.
exists e1 s1 s2 x1 x2.(over(e1,x2) & n_water(x2) & Actor(e1,x1) & v_swoop(e1) & n_bird(x1) & a_white(s2) & Theme(s2,x1) & a_large(s1) & Theme(s1,x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_fly(e1) & (x1 = x2) & n_bird(x1))