A young man, wearing yellow biking gear, is riding his bike in a race.
The man is wearing a bike helmet.
Just because a man is riding his bike in a race doesn't imply man is wearing a bike helmet.
exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6.(in(e2,x6) & n_race(x6) & Theme(e2,x5) & Actor(e2,x1) & v_ride(e2) & n_bike(x5) & of(x5,x1) & n_male(x1) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_gear(x3) & of(x3,x4) & n_biking(x4) & a_yellow(s2) & Theme(s2,x3) & (x1 = x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_helmet(x2) & of(x2,x3) & n_bike(x3))