Three athletes in red and white uniforms and helmets.
The athletes are in uniforms.
Three athletes in uniforms is another way to say that "the athletes are in uniforms."
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & n_helmet(x4) & n_uniform(x3) & a_white(s2) & Theme(s2,x3) & subset_of(x4,x2) & subset_of(x3,x2) & a_red(s1) & Theme(s1,x2) & n_athlete(x1) & card_eq_3(x1))
exists p1 x1.(n_athlete(x1) & exists x2.(in(x1,x2) & n_uniform(x2)))