A large brown and white bird flying over land.
The large bird is looking for food.
When a bird is flying over land it is not always looking for food.
exists e1 s1 s2 s3 x1 x2 x3 x4.(a_topic(s1) & over(e1,x4) & n_land(x4) & Actor(e1,x3) & v_fly(e1) & (s1 = x3) & n_bird(x2) & a_white(s3) & Theme(s3,x2) & n_brown(x1) & subset_of(x2,s1) & subset_of(x1,s1) & a_large(s2) & Theme(s2,s1))
exists e1 s1 x1 x2.(n_bird(x1) & a_large(s1) & Theme(s1,x1) & for(e1,x2) & n_food(x2) & Actor(e1,x1) & v_look(e1))