Four boys playing soccer.
Four boys are playing soccer while wearing blue uniforms.
You can not infer they are blue.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_soccer(x3) & (x1 = x2) & n_boy(x1) & card_eq_4(x1))
exists e2 e1 s1 x1 x2 x3.(while(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_wear(e2) & n_uniform(x3) & a_blue(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_soccer(x2) & n_boy(x1) & card_eq_4(x1))