A woman wearing a hat looks at a table filled with antiques.
The woman does not have a hat on.
A hat and does not have a hat are different.
exists e1 e2 e3 x1 x2 x3 x4 x5 x6.(at(e2,x4) & with(e3,x6) & n_antique(x6) & Theme(e3,x5) & v_fill(e3) & (x4 = x5) & n_table(x4) & Actor(e2,x1) & v_look(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_hat(x3) & (x1 = x2) & n_woman(x1))
exists x1.(n_woman(x1) & -exists e1 s1 x2.(a_on(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_hat(x2)))