premise: A man in a black shirt opening his mail.
hypothesis: A man is opening mail.
explanation_1: opening his mail same as opening mail.
explanation_2: A Person is opening mail.
explanation_3: A man opens mail regardless of the shirt he is wearing.
premise_logic: exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_open(e1) & n_mail(x4) & of(x4,x1) & n_male(x1) & (x2 = x3) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_open(e1) & n_mail(x2) & n_man(x1))