premise: A man who has a gray beard and gray hair laughs while wearing a purple shirt.
hypothesis: A man is laughing at a woman who has fallen over.
explanation_1: The man is laughing.  He could be laughing for many reasons. Everyone who laughs is not laughing at a woman who has fallen over.
explanation_2: The man could have been laughing at anything, it doesn't follow that it is at a woman who has fallen over.
explanation_3: Just because he laughs does not mean it is at a woman.
premise_logic: exists e1 e2 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & while(e1,e2) & Theme(e2,x7) & Actor(e2,x2) & v_wear(e2) & n_shirt(x7) & a_purple(s3) & Theme(s3,x7) & Theme(e1,x3) & Actor(e1,x2) & v_have(e1) & subset_of(x5,x3) & n_laugh(x5) & of(x5,x6) & n_hair(x6) & a_gray(s2) & Theme(s2,x5) & subset_of(x4,x3) & n_beard(x4) & a_gray(s1) & Theme(s1,x4) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists e1 e2 s1 x1 x2 x3.(at(e1,x2) & a_over(s1) & Manner(e2,s1) & Actor(e2,x3) & v_fall(e2) & (x2 = x3) & n_woman(x2) & Actor(e1,x1) & v_laugh(e1) & n_man(x1))
premise_sim: exists e1 e2 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(while(e1,e2) & v_wear(e2) & v_have(e1) & subset_of(x5,x3) & subset_of(x4,x3) & of(x5,x6) & n_shirt(x7) & n_man(x1) & n_laugh(x5) & n_hair(x6) & n_beard(x4) & a_topic(x1) & a_purple(s3) & a_gray(s2) & a_gray(s1) & Theme(s3,x7) & Theme(s2,x5) & Theme(s1,x4) & Theme(e2,x7) & Theme(e1,x3) & Actor(e2,x2) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists e1 e2 s1 x1 x2 x3.(v_laugh(e1) & v_fall(e2) & n_woman(x2) & n_man(x1) & at(e1,x2) & a_over(s1) & Manner(e2,s1) & Actor(e2,x3) & Actor(e1,x1) & (x2 = x3))