Two men wearing black clothes practicing karate moves, and another man looking at them.
Two men practice martial arts together
If they are practicing karate moves, they are practicing martial arts, since karate is a martial art.
exists e2 e1 e3 s1 s2 x1 x2 x3 x4 x5.(at(e3,x1) & n_thing(x1) & Actor(e3,x5) & v_look(e3) & n_man(x5) & -(x5 = x1) & n_man(x1) & n_man(x1) & Theme(e2,x2) & Actor(e2,x1) & v_wear(e2) & Theme(e1,x4) & Actor(e1,x3) & v_practice(e1) & n_move(x4) & a_karate(s2) & Theme(s2,x4) & (x2 = x3) & n_clothes(x2) & a_black(s1) & Theme(s1,x2) & card_eq_2(x1))
exists s1 x1 x2 x3.(a_topic(x1) & r_together(x1) & n_art(x1) & a_martial(s1) & Theme(s1,x1) & of(x1,x3) & n_practice(x3) & of(x1,x2) & n_man(x2) & card_eq_2(x1))