premise: A girl in sunglasses smiles.
hypothesis: Girl wearing sunglasses smiling at a friend.
explanation_1: A girl wearing sunglasses smiling does not imply that it would be at a friend necessarily.
explanation_2: You can smile and not be smiling at a friend.
explanation_3: Just because a girl in sunglasses smiles does not mean she is smiling at her friend.
premise_logic: exists e1 x1 x2.(Actor(e1,x1) & v_smile(e1) & in(x1,x2) & n_sunglass(x2) & n_girl(x1))
hypothesis_logic: exists e1 e2 x1 x2 x3 x4.(a_topic(x1) & at(e2,x4) & n_friend(x4) & Actor(e2,x3) & v_smile(e2) & (x1 = x3) & n_sunglass(x1) & Actor(e1,x1) & v_wear(e1) & (x1 = x2) & ne_nam_girl(x2))