Dogs fight in grass over toy.
Three dogs all fight for a toy bone.
More or less than three dogs can fight at a time.  Toys for dogs are made out of many other materials besides bone.
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 x1 x2 x3 x4.(a_topic(x1) & for(x1,x3) & n_bone(x3) & of(x3,x4) & n_toy(x4) & n_fight(x1) & of(x1,x2) & n_dog(x2) & card_eq_3(x1))