People are riding on a ride at a theme park or carnival.
They are outside.
Riding on a ride at a theme park implies that the people are outside.
exists e1 x1 x2 x3.(at(e1,x3) & (exists x4.(n_park(x3) & of(x3,x4) & n_theme(x4)) | n_carnival(x3)) & on(e1,x2) & n_ride(x2) & Actor(e1,x1) & v_ride(e1) & n_people(x1))
exists s1 x1.(n_thing(x1) & Theme(s1,x1) & a_outside(s1))