A crowd of people are gathered in a busy subway station.
There are people in this subway station.
there is a crowd  of people in the subway station
exists e1 s1 x1 x2 x3 x4.(in(e1,x3) & n_station(x3) & of(x3,x4) & n_subway(x4) & a_busy(s1) & Theme(s1,x3) & Theme(e1,x1) & v_gather(e1) & of(x1,x2) & n_people(x2) & n_crowd(x1))
exists p1 x1 x3 x4.(n_station(x3) & of(x3,x4) & n_subway(x4) & exists x2.((x1 = x2) & in(x2,x3) & n_people(x2)))