A girl bounces.
dog chases wolf
Referring to girl and referring to animals. Both are not same
exists e1 x1.(Actor(e1,x1) & v_bounce(e1) & n_girl(x1))
exists e1 x1 x2.(Actor(e1,x1) & v_wolf(e1) & n_chase(x1) & of(x1,x2) & n_dog(x2))