premise: Two men working on the roof of an apartment building with a nice looking skyline behind them.
hypothesis: Two men not working on the roof of an apartment building
explanation_1: Two men cannot be working and not working at the same time.
explanation_2: The men are either working on the roof or not.
explanation_3: The two men can't be working and not working at the same time.
premise_logic: exists e2 e1 s1 x1 x2 x3 x4 x5 x6.(n_thing(x3) & n_roof(x3) & a_topic(x1) & on(e1,x3) & of(x3,x4) & with(x4,x6) & behind(x6,x3) & n_skyline(x6) & Actor(e2,x6) & v_look(e2) & a_nice(s1) & Theme(s1,x6) & n_building(x4) & of(x4,x5) & n_apartment(x5) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
hypothesis_logic: exists x1 x2 x3.(n_roof(x3) & a_topic(x1) & -exists e1 x4 x5.(on(e1,x3) & of(x3,x4) & n_building(x4) & of(x4,x5) & n_apartment(x5) & Actor(e1,x2) & v_work(e1)) & (x1 = x2) & n_man(x1) & card_eq_2(x1))