four men looking at a large sign.
The sign is advertising a business.
Not all signs are advertising a business.
exists e1 s1 x1 x2.(at(e1,x2) & n_sign(x2) & a_large(s1) & Theme(s1,x2) & Actor(e1,x1) & v_look(e1) & n_man(x1) & card_eq_4(x1))
exists e1 x1 x2.(n_sign(x1) & Theme(e1,x2) & Actor(e1,x1) & v_advertise(e1) & n_business(x2))