Two motorcycle racers are driving on a race course.
The two motorcyclists were competing for first place.
Motorcyclists driving on a race course need not necessarily be competing for first place.
exists e1 x1 x2 x3 x4.(on(e1,x3) & n_course(x3) & of(x3,x4) & n_race(x4) & Actor(e1,x1) & v_drive(e1) & n_racer(x1) & of(x1,x2) & n_motorcycle(x2) & card_eq_2(x1))
exists e1 s1 x1 x2.(n_motorcyclist(x1) & card_eq_2(x1) & for(e1,x2) & n_place(x2) & a_first(s1) & Theme(s1,x2) & Actor(e1,x1) & v_compete(e1))