premise: Three people sitting on some stairs laughing.
hypothesis: Someone told a joke.
explanation_1: They may be laughing at something other than a joke
explanation_2: Just because three people are sitting laughing it does not mean someone told a joke.
explanation_3: The people could have been laughing at something other than a joke.
premise_logic: exists e2 e1 x1 x2 x3.(a_topic(x1) & for(e1,e2) & Actor(e2,x2) & v_laugh(e2) & on(e1,x3) & n_stair(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1) & card_eq_3(x1))
hypothesis_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_tell(e1) & n_joke(x2) & n_person(x1))
premise_sim: exists e2 e1 x1 x2 x3.(v_sit(e1) & v_laugh(e2) & on(e1,x3) & n_stair(x3) & n_people(x1) & for(e1,e2) & card_eq_3(x1) & a_topic(x1) & Actor(e2,x2) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists e1 x1 x2.(v_tell(e1) & n_person(x1) & n_joke(x2) & Theme(e1,x2) & Actor(e1,x1))