A group of race buggies travel down a racetrack.
race buggies ravel down a racetrack in a stadium
Just because the buggies are traveling on a racetrack doesn't mean they are in a stadium.
exists e1 s1 x1 x2 x3 x4.(n_racetrack(x4) & Time(e1,x4) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_travel(e1) & of(x1,x2) & n_buggy(x2) & of(x2,x3) & n_race(x3) & n_group(x1))
exists e1 s1 x1 x2 x3 x4.(a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_ravel(e1) & in(x3,x4) & n_stadium(x4) & n_racetrack(x3) & n_buggy(x1) & of(x1,x2) & n_race(x2))