Dirt bikes get airborne at a racetrack.
The riders are sitting idly.
getting and sitting are two different activities
exists e1 p1 x1 x2 x3.(at(e1,x3) & n_racetrack(x3) & exists s1.(Theme(s1,x1) & a_airborne(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_get(e1) & n_bike(x1) & (x1 = x2) & ne_nam_dirt(x2))
exists e1 p1 x1.(n_rider(x1) & exists s1.(Theme(s1,x1) & a_idly(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1))