The dog is carrying a toy through the grass.
A dog is playing with its toy bone in the grassy field.
Just because the dog is carrying a toy through the grass does not mean the dog is playing.
exists e1 x1 x2 x3.(n_grass(x3) & n_dog(x1) & through(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & n_toy(x2))
exists e1 s1 x1 x2 x3 x4.(n_field(x4) & a_grassy(s1) & Theme(s1,x4) & with(e1,x2) & in(x2,x4) & n_bone(x2) & of(x2,x3) & n_toy(x3) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_play(e1) & n_dog(x1))