premise: Three people on skis are standing behind a no skiing sign.
hypothesis: Three people sitting by a fire.
explanation_1: The people cannot be simultaneously standing and sitting
explanation_2: People cannot be sitting and standing at the same time.
explanation_3: You cannot be sitting and standing at the same time.
premise_logic: exists e1 x1 x2.(-exists x3 x4 x5.(behind(e1,x3) & Time(x3,x5) & n_a(x5) & n_sign(x3) & of(x3,x4) & n_skiing(x4)) & Actor(e1,x1) & v_stand(e1) & on(x1,x2) & n_ski(x2) & n_people(x1) & card_eq_3(x1))
hypothesis_logic: exists e1 x1 x2 x3.(a_topic(x1) & by(e1,x3) & n_fire(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1) & card_eq_3(x1))