Two bicyclists race down a street.
Two people drive monster trucks in a rally.
Bicyclists riding bike cannot drive monster trucks at the same time.
exists x1 x2 x3.(a_topic(x1) & down(x1,x3) & n_street(x3) & n_race(x1) & of(x1,x2) & n_bicyclist(x2) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(in(e1,x4) & n_rally(x4) & Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_truck(x2) & of(x2,x3) & n_monster(x3) & n_people(x1) & card_eq_2(x1))