A group of young boys on opposing teams are playing soccer.
Boys are playing soccer.
Boys are refers to  group of young boys.
exists e1 s1 s2 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_play(e1) & n_soccer(x4) & of(x1,x2) & on(x2,x3) & n_team(x3) & a_opposing(s2) & Theme(s2,x3) & n_boy(x2) & a_young(s1) & Theme(s1,x2) & n_group(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_soccer(x2) & n_boy(x1))