An athlete races down the track in his bike.
The person is Lance Armstrong.
All athletes are not Lance Armstrong.
exists s1 x1 x2 x3.(n_bike(x3) & of(x3,x2) & n_male(x2) & n_track(x2) & a_topic(x1) & down(x1,x2) & in(x2,x3) & n_race(x1) & a_athlete(s1) & Theme(s1,x1))
exists p1 x1 x2 x3.(ne_per_armstrong(x2) & (x2 = x3) & ne_per_lance(x3) & n_person(x1) & (x1 = x2))