Two bicyclists are racing each other on a dirt track.
Two bicyclists are standing by their bikes near a dirt track
You can't be racing your bike and standing by your bike at the same time
exists x1.(all x2.(n_other(x2) -> exists e1 x3 x4.(on(e1,x3) & n_track(x3) & of(x3,x4) & n_dirt(x4) & Theme(e1,x2) & Actor(e1,x1) & v_race(e1))) & n_bicyclist(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(near(e1,x3) & n_track(x3) & of(x3,x4) & n_dirt(x4) & by(e1,x2) & n_bike(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_stand(e1) & n_bicyclist(x1) & card_eq_2(x1))