premise: A man in a suit and tie and a woman with luggage join others in waiting in the London Underground.
hypothesis: A couple are travelling to see friends in London.
explanation_1: A man and a woman can be with each other without being a couple. There are no friends mentioned or that they are going to see anyone.
explanation_2: A man in a suit and tie and a woman with luggage join others does not mean that they are travelling to see friends.
explanation_3: Just because a man and a woman are both waiting in the Underground does not mean they are a couple. The man and the woman might be traveling for other reasons than seeing friends.
premise_logic: exists e2 e1 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10.(n_underground(x9) & (x9 = x10) & ne_geo_london(x10) & in(e1,e2) & in(e2,x9) & Actor(e2,x1) & v_wait(e2) & Theme(e1,x8) & Actor(e1,x1) & v_join(e1) & -(x8 = x2) & n_person(x2) & n_person(x8) & subset_of(x6,x1) & with(x6,x7) & n_luggage(x7) & n_woman(x6) & subset_of(x2,x1) & in(x2,x3) & subset_of(x5,x3) & n_tie(x5) & subset_of(x4,x3) & n_suit(x4) & n_man(x2))
hypothesis_logic: exists e1 p1 x1 x3.(ne_geo_london(x3) & Topic(e1,p1) & Actor(e1,x1) & v_travel(e1) & exists e2 x2.(in(e2,x3) & Theme(e2,x2) & Actor(e2,x1) & v_see(e2) & n_friend(x2)) & n_couple(x1))