Here are two men who appear to be practicing martial arts.
Women practice martial arts.
The people practicing martial arts can be described as men or women, not both.
exists e1 p1 s1 x1 x2.(Theme(s1,x1) & a_here(s1) & Topic(e1,p1) & Actor(e1,x2) & v_appear(e1) & exists e2 s2 x3.(Theme(e2,x3) & Actor(e2,x2) & v_practice(e2) & n_art(x3) & a_martial(s2) & Theme(s2,x3)) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
exists s1 s2 x1 x2 x3.(n_art(x1) & a_.(s2) & Theme(s2,x1) & a_martial(s1) & Theme(s1,x1) & of(x1,x3) & n_practice(x3) & (x1 = x2) & ne_nam_women(x2) & a_topic(x1))