There are 2 people in a bike race.
There are 2 people riding bike.
Bike requires riding.
exists p1 x1 x2 x3.(in(p1,x2) & n_race(x2) & of(x2,x3) & n_bike(x3) & exists x4.((x1 = x4) & n_people(x4) & n_date(x4) & a_date_day_02(x4) & a_date_day_02(x4)))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & n_bike(x4) & (x2 = x3) & n_people(x2) & n_date(x2) & a_date_day_02(x2) & a_date_day_02(x2))