Two bicyclists race down a street.
Two people ride their bikes.
people are bicyclists
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.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & of(x2,x1) & n_thing(x1) & n_people(x1) & card_eq_2(x1))