This man is in a bicycle race.
A man is in a race.
Both subjects are in a race
exists p1 x1.(n_man(x1) & exists x2 x3.(in(x1,x2) & n_race(x2) & of(x2,x3) & n_bicycle(x3)))
exists p1 x1.(exists x2.(in(x1,x2) & n_race(x2)) & n_man(x1))