A white car and a yellow car race down the track.
Two Formula One cars are racing.
Not all cars race down the track are Formula One cars.
exists s1 s2 s3 x1 x2 x3 x4.(n_track(x4) & a_topic(s1) & subset_of(x2,s1) & down(x2,x4) & n_race(x2) & of(x2,x3) & n_car(x3) & a_yellow(s3) & Theme(s3,x2) & subset_of(x1,s1) & n_car(x1) & a_white(s2) & Theme(s2,x1))
exists e1 x1 x2.(Actor(e1,x1) & v_race(e1) & n_car(x1) & card_eq_1(x1) & (x1 = x2) & ne_org_formula(x2) & card_eq_2(x1))