Dogs fight in grass over toy.
The toy is in both the dog's mouths.
A fought over toy does not necessarily have to be in the mouth of both dogs simultaneously.
exists e1 x1 x2 x3 x4.(in(e1,x3) & over(x3,x4) & n_toy(x4) & n_grass(x3) & Theme(e1,x2) & Actor(e1,x1) & v_fight(e1) & n_thing(x2) & n_dog(x1))
exists p1 x1 x2 x3.(n_mouth(x3) & of(x3,x2) & n_dog(x2) & n_toy(x1) & exists x4.(in(x1,x3) & Time(x3,x4) & n_both(x4)))