premise: A man is smiling at a woman in a white dress.
hypothesis: The man knows the woman.
explanation_1: Just because a man is smiling at a woman doesn't mean he knows the woman.
explanation_2: The man could smile at a woman he doesn't know.
explanation_3: Smiling at someone does not imply that he knows them.
premise_logic: exists e1 s1 x1 x2 x3.(at(e1,x2) & in(x2,x3) & n_dress(x3) & a_white(s1) & Theme(s1,x3) & n_woman(x2) & Actor(e1,x1) & v_smile(e1) & n_man(x1))
hypothesis_logic: exists e1 x1 x2.(n_woman(x2) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_know(e1))