A snarling dog approaches a hissing cat.
The dog and cat are peaceful friends.
If a dog is snarling, he's not likely peaceful friends with the cat he's approaching.
exists e1 e2 x1 x2 x3.(Theme(e2,x2) & Actor(e2,x1) & v_approach(e2) & n_cat(x2) & of(x2,x3) & n_hissing(x3) & n_dog(x1) & Actor(e1,x1) & v_snarl(e1))
exists p1 x1 x2 x3.(n_cat(x3) & n_dog(x2) & subset_of(x3,x1) & subset_of(x2,x1) & exists s1 x4.((x1 = x4) & n_friend(x4) & a_peaceful(s1) & Theme(s1,x4)))