A dog chases a smaller dog.
A dog is chasing another dog
For it to be true that a dog chases a smaller dog, it must be true that a dog is chasing another dog. Because a smaller dog is another dog.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_dog(x2) & r_more(s1) & a_smaller(s1) & Theme(s1,x2) & n_dog(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_dog(x2) & -(x2 = x1) & n_dog(x1) & n_dog(x1))