Two children are wearing football uniforms.
Two young football players are waiting on the sidelines in their uniforms.
Two children wearing football uniforms could be doing anything, not just waiting on the sidelines.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_uniform(x2) & of(x2,x3) & n_football(x3) & n_child(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3 x4.(n_uniform(x4) & of(x4,x3) & n_thing(x3) & n_sideline(x3) & in(e1,x4) & on(e1,x3) & Actor(e1,x1) & v_wait(e1) & n_player(x1) & of(x1,x2) & n_football(x2) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))