Two motocross riders sit on the shoulder of the racetrack.
The motocross riders are sitting near each other.
If the two motocross riders are sitting in the same location then they are sitting near one another.
exists e1 x1 x2 x3 x4.(n_racetrack(x4) & n_shoulder(x3) & on(e1,x3) & of(x3,x4) & Actor(e1,x1) & v_sit(e1) & n_rider(x1) & of(x1,x2) & n_motocross(x2) & card_eq_2(x1))
exists e1 x1 x2.(n_rider(x1) & of(x1,x2) & n_motocross(x2) & all x3.(n_other(x3) -> near(e1,x3)) & Actor(e1,x1) & v_sit(e1))