Three men are working on a roof.
The pool is almost ready for prime time.
A roof isn't a pool.
exists e1 x1 x2.(on(e1,x2) & n_roof(x2) & Actor(e1,x1) & v_work(e1) & n_man(x1) & card_eq_3(x1))
exists s1 s2 x1 x2.(n_pool(x1) & r_almost(s1) & for(s1,x2) & n_time(x2) & a_prime(s2) & Theme(s2,x2) & Theme(s1,x1) & a_ready(s1))