Two dogs fighting for the same chew toy.
A dog wrestling with another for its toy.
second sentence doesn't imply it's wrestling for the same toy
exists e2 e1 x1 x2 x3 x4.(n_same(x3) & Theme(e2,x4) & Actor(e2,x1) & v_chew(e2) & n_toy(x4) & for(e1,x3) & Actor(e1,x2) & v_fight(e1) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))
exists x1 x2 x3 x4.(a_topic(x1) & with(x1,x3) & for(x3,x4) & n_toy(x4) & of(x4,x1) & n_thing(x1) & n_thing(x3) & n_wrestling(x1) & of(x1,x2) & n_dog(x2))