Man in a suit in Grand Central station.
The man is not in a suit.
The man is either wearing a suit or not wearing a suit.
exists x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x2) & in(x2,x3) & n_station(x3) & (x3 = x5) & ne_geo_central(x5) & (x3 = x4) & ne_geo_grand(x4) & n_suit(x2) & n_man(x1))
exists x1.(n_man(x1) & -exists p1 x2.(in(x1,x2) & n_suit(x2)))