A man in a white shirt and a woman in a black shirt are standing in front of a store.
The man is a company CEO
Not all men in white shirts are a company CEO
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(in(e1,x6) & of(x6,x7) & n_store(x7) & n_front(x6) & Actor(e1,x1) & v_stand(e1) & subset_of(x4,x1) & in(x4,x5) & n_shirt(x5) & a_black(s2) & Theme(s2,x5) & n_woman(x4) & subset_of(x2,x1) & in(x2,x3) & n_shirt(x3) & a_white(s1) & Theme(s1,x3) & n_man(x2))
exists p1 x1.(n_man(x1) & exists x2 x3.((x1 = x2) & n_ceo(x2) & of(x2,x3) & n_company(x3)))