premise: A young couple sitting in a black chair smiling.
hypothesis: Two young people are angry.
explanation_1: The couple would not be smiling while angry.
explanation_2: can't be angry if people are smiling
explanation_3: Smiling and being angry are mutually exclusive.
premise_logic: exists e1 e2 s1 s2 x1 x2 x3.(a_topic(x1) & for(e1,e2) & Actor(e2,x2) & v_smile(e2) & in(e1,x3) & n_chair(x3) & a_black(s2) & Theme(s2,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_couple(x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists s1 s2 x1.(Theme(s2,x1) & a_angry(s2) & n_people(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))