Young boys and girls practice martial arts while being graded by peers and teachers sitting around the mats in a dojo.
The children are learning martial arts.
Boys as children in both.
(-x)
exists e1 s1 x1 x2.(n_child(x1) & Theme(e1,x2) & Actor(e1,x1) & v_learn(e1) & n_art(x2) & a_martial(s1) & Theme(s1,x2))