A group of people are waiting at a subway station.
People are gathered together.
People gathered together is rephrasing of group of people
exists e1 x1 x2 x3 x4.(at(e1,x3) & n_station(x3) & of(x3,x4) & n_subway(x4) & Actor(e1,x1) & v_wait(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 s1 x1.(a_together(s1) & Manner(e1,s1) & Theme(e1,x1) & v_gather(e1) & n_people(x1))