premise: Man sitting playing guitar.
hypothesis: A man is standing on stage at a concert, playing saxophone.
explanation_1: The man cannot be sitting and standing simultaneously.
explanation_2: If a man is sitting playing a guitar he is not standing playing a saxophone.
explanation_3: The man cannot be sitting and standing at the same time.
premise_logic: exists e1 s1 x1 x2 x3.(n_guitar(x1) & a_.(s1) & Theme(s1,x1) & of(x1,x3) & n_playing(x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_man(x2) & a_topic(x1))
hypothesis_logic: exists e1 e2 x1 x2 x3 x4.(for(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_play(e2) & n_saxophone(x4) & at(e1,x3) & n_concert(x3) & on(e1,x2) & n_stage(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))