Two young boys practicing the art of karate.
Two young brothers practice karate.
There is nothing to substantiate conclusion that boys are brothers.
exists e1 s1 x1 x2 x3 x4.(n_art(x3) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_practice(e1) & of(x3,x4) & n_karate(x4) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists s1 s2 x1 x2 x3.(n_karate(x1) & of(x1,x3) & n_practice(x3) & of(x1,x2) & n_brother(x2) & a_.(s2) & Theme(s2,x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1) & a_topic(x1))