There are two bike racers, the one in the front is wearing black and white; and the one towards the black is in red white and blue.
the two bike racers are wearing different colored uniforms
The bikers are wearing different uniforms because one is wearing black and white and one is in red white and blue.
exists e1 p1 p2 p3 x1 x2 x3 x4.(n_black(x4) & n_thing(x2) & card_eq_1(x2) & card_eq_1(x2) & n_front(x3) & exists s3 s4 x7.(in(x2,x7) & n_blue(x7) & a_white(s4) & Theme(s4,x7) & a_red(s3) & Theme(s3,x7)) & towards(x2,x4) & exists s1 s2.(Theme(s2,x2) & a_white(s2) & Theme(s1,x2) & a_black(s1)) & Topic(e1,p2) & Actor(e1,x2) & v_wear(e1) & in(x2,x3) & exists x5 x6.((x1 = x5) & n_racer(x5) & of(x5,x6) & n_bike(x6) & card_eq_2(x5)))
exists e2 e3 e1 x1 x2 x3 x4.(n_uniform(x4) & Theme(e2,x4) & v_color(e2) & n_racer(x1) & of(x1,x2) & n_bike(x2) & card_eq_2(x1) & Theme(e3,x3) & Actor(e3,x1) & v_wear(e3) & -(x3 = x4) & n_uniform(x3) & Theme(e1,x3) & v_color(e1))