premise: A man in a jacket works atop a set of stairs.
hypothesis: Nobody is working.
explanation_1: Either a man is working or nobody is working; it can't be both simultaneously.
premise_logic: exists e1 x1 x2 x3 x4.(atop(e1,x3) & of(x3,x4) & n_stair(x4) & n_set(x3) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & n_jacket(x2) & n_man(x1))
hypothesis_logic: -exists e1 x1.(Actor(e1,x1) & v_work(e1) & n_person(x1))
premise_sim: exists e1 x1 x2 x3 x4.(v_work(e1) & of(x3,x4) & n_stair(x4) & n_set(x3) & n_man(x1) & n_jacket(x2) & in(x1,x2) & atop(e1,x3) & Actor(e1,x1))
hypothesis_sim: all e1 x1.(-v_work(e1) | -n_person(x1) | -Actor(e1,x1))