People gathered around a hot air balloon in the process of inflating.
The people are riding in a hot air balloon.
They could not be gathered around the hot air balloon if they are riding it they cannot do both at the same time.
exists e1 s1 x1 x2 x3 x4 x5.(n_process(x4) & in(e1,x4) & of(x4,x5) & n_inflate(x5) & around(e1,x2) & n_balloon(x2) & of(x2,x3) & n_air(x3) & a_hot(s1) & Theme(s1,x2) & Actor(e1,x1) & v_gather(e1) & n_people(x1))
exists e1 s1 x1 x2 x3.(n_people(x1) & in(e1,x2) & n_balloon(x2) & of(x2,x3) & n_air(x3) & a_hot(s1) & Theme(s1,x2) & Actor(e1,x1) & v_ride(e1))