A dog jumps over a barrier.
The dog is a Pug.
The dog jumping over a barrier doesn't imply that it's a Pug.
exists e1 x1 x2.(over(e1,x2) & n_barrier(x2) & Actor(e1,x1) & v_jump(e1) & n_dog(x1))
exists p1 x1.(n_dog(x1) & exists x2.((x1 = x2) & n_pug(x2)))