premise: A man in a white shirt riding a bike down the pavement.
hypothesis: The man is in a black shirt.
explanation_1: Either the man is wearing  a shirt that is black or white.
explanation_2: The man's shirt is either white or it is black.
explanation_3: White and black are two different colors.
premise_logic: exists e1 s1 x1 x2 x3 x4 x5.(n_pavement(x5) & a_topic(x1) & in(x1,x2) & down(e1,x5) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & n_bike(x4) & (x2 = x3) & n_shirt(x2) & a_white(s1) & Theme(s1,x2) & n_man(x1))
hypothesis_logic: exists p1 x1.(n_man(x1) & exists s1 x2.(in(x1,x2) & n_shirt(x2) & a_black(s1) & Theme(s1,x2)))