premise: the two couples are chatting by the bus.
hypothesis: The two couples are sleep at the bus stop.
explanation_1: People cannot be chatting and asleep at the same time.
premise_logic: exists e1 x1 x2.(n_bus(x2) & n_couple(x1) & card_eq_2(x1) & by(e1,x2) & Actor(e1,x1) & v_chat(e1))
hypothesis_logic: exists p1 x1 x2 x3.(n_stop(x2) & of(x2,x3) & n_bus(x3) & n_couple(x1) & card_eq_2(x1) & at(p1,x2) & exists x4.((x1 = x4) & n_sleep(x4)))
premise_sim: exists e1 x1 x2.(v_chat(e1) & n_couple(x1) & n_bus(x2) & card_eq_2(x1) & by(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists p1 x1 x2 x3.(of(x2,x3) & n_stop(x2) & n_couple(x1) & n_bus(x3) & exists x4.(n_sleep(x4) & (x1 = x4)) & card_eq_2(x1) & at(p1,x2))