A man is working on the railroad.
The man is really a woman.
man is not a woman
exists e1 x1 x2.(n_railroad(x2) & on(e1,x2) & Actor(e1,x1) & v_work(e1) & n_man(x1))
exists p1 s1 x1.(n_man(x1) & a_really(s1) & Manner(p1,s1) & exists x2.((x1 = x2) & n_woman(x2)))