Two woman are doing karate.
Two men are playing tennis.
men and women are different gender
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_karate(x2) & n_woman(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_tennis(x2) & n_man(x1) & card_eq_2(x1))