premise: A man wearing shorts is playing an acoustic guitar while a person in the background looks the other way.
hypothesis: two women sing opera
explanation_1: It can be either two women or a man. They can either be playing acoustic guitar or singing opera.
explanation_2: A man is not two women and singing opera is not playing guitar
explanation_3: You cannot be a man and two women at the same time.  To sing is not the same as playing a guitar.
premise_logic: exists e1 e2 p1 s1 x1 x2 x3 x4 x6 x7.(-(x7 = x7) & n_way(x7) & n_background(x6) & exists e3 x5.(Theme(e3,x7) & Actor(e3,x5) & v_look(e3) & in(x5,x6) & n_person(x5)) & while(e2,p1) & Theme(e2,x4) & Actor(e2,x1) & v_play(e2) & n_guitar(x4) & a_acoustic(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_shorts(x3) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_sing(e1) & n_opera(x2) & n_woman(x1) & card_eq_2(x1))