premise: A man playing a piano
hypothesis: The man's hands are on the keys of a piano.
explanation_1: In order to be playing a piano one must have hands on the keys of a piano.
explanation_2: To be playing a piano, hands must be on the keys of a piano.
explanation_3: A man's hands should be on the keys of a piano is he is playing a piano.
premise_logic: exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_piano(x3) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists p1 x1 x2 x3.(n_key(x3) & n_hand(x2) & of(x2,x1) & n_man(x1) & exists x4.(on(x2,x3) & of(x3,x4) & n_piano(x4)))
premise_sim: exists e1 x1 x2 x3.(v_play(e1) & n_piano(x3) & n_man(x1) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists x1 x2 x3.(of(x2,x1) & n_man(x1) & n_key(x3) & n_hand(x2) & exists x4.(on(x2,x3) & of(x3,x4) & n_piano(x4)))