Two men wearing martial arts clothing are practicing martial arts.
People are doing martial arts.
Two men are people. Practicing Martial arts is the same as doing martial arts.
exists e2 e1 s1 s2 x1 x2 x3 x4 x5.(Theme(e2,x5) & Actor(e2,x1) & v_practice(e2) & n_art(x5) & a_martial(s2) & Theme(s2,x5) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_clothing(x3) & of(x3,x4) & n_art(x4) & a_martial(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_art(x2) & a_martial(s1) & Theme(s1,x2) & n_people(x1))