Dogs fight in grass over toy.
Dogs fight one another.
Usually when dogs fight they fight one another.
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 e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_fight(e1) & n_thing(x2) & card_eq_1(x2) & a_another(s1) & Theme(s1,x2) & n_dog(x1))