premise: A man who has a gray beard and gray hair laughs while wearing a purple shirt.
hypothesis: A bald man is watching tennis.
explanation_1: A bald man cannot have gray hair on head.
explanation_2: A bald man does not have gray hair.
explanation_3: Gray hair describes his hair, but bald men have no hair.
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 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_tennis(x2) & n_man(x1) & a_bald(s1) & Theme(s1,x1))