An audience is watching a car race at a racetrack.
A group of people are gathered at the racetrack
Group of people is a synonym of audience, and that group must be gathered if they are watching something.
exists e1 x1 x2 x3 x4.(at(e1,x4) & n_racetrack(x4) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_race(x2) & of(x2,x3) & n_car(x3) & n_audience(x1))
exists e1 x1 x2 x3.(n_racetrack(x3) & at(e1,x3) & Theme(e1,x1) & v_gather(e1) & of(x1,x2) & n_people(x2) & n_group(x1))