A woman selling hats outside.
A man selling hats outside.
It's either a man or a woman that's selling hats. The same person can't be a man and a woman.
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_outside(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_sell(e1) & n_hat(x3) & (x1 = x2) & n_woman(x1))
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_outside(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_sell(e1) & n_hat(x3) & (x1 = x2) & n_man(x1))