premise: A group watching two men in white shirts perform.
hypothesis: There is a group watching two women in black shirts perform.
explanation_1: Unless these are two different groups, or the men and women are performing together, both men and women cannot be watched together. Also, sentence 1 is grammatically incorrect: A group IS watching two men in white shirts perform.
premise_logic: exists e1 e2 s1 x1 x2 x3 x4.(Actor(e2,x1) & v_perform(e2) & Theme(e1,x3) & Actor(e1,x2) & v_watch(e1) & in(x3,x4) & n_shirt(x4) & a_white(s1) & Theme(s1,x4) & n_man(x3) & card_eq_2(x3) & (x1 = x2) & n_group(x1))
hypothesis_logic: exists e1 e2 p1 s1 x1 x2 x3.(exists p2 x4 x5.((x4 = x5) & n_group(x5)) & Topic(e2,p1) & Actor(e2,e1) & v_perform(e2) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & in(x2,x3) & n_shirt(x3) & a_black(s1) & Theme(s1,x3) & n_woman(x2) & card_eq_2(x2) & n_thing(x1))
premise_sim: exists e1 e2 s1 x1 x2 x3 x4.(v_watch(e1) & v_perform(e2) & n_shirt(x4) & n_man(x3) & n_group(x1) & in(x3,x4) & card_eq_2(x3) & a_white(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e2,x1) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists e1 e2 p1 s1 x1 x2 x3.(v_watch(e1) & v_perform(e2) & n_woman(x2) & n_thing(x1) & n_shirt(x3) & in(x2,x3) & exists x4 x5.(n_group(x5) & (x4 = x5)) & card_eq_2(x2) & a_black(s1) & Topic(e2,p1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e2,e1) & Actor(e1,x1))