A dog is jumping over some logs.
There are no logs
There were logs that the dog jumped over.
exists e1 s1 x1 x2.(a_over(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_jump(e1) & n_log(x2) & n_dog(x1))
exists p1 x1.-exists x2.((x1 = x2) & n_log(x2))