A group of people on a stair landing are waiting in line.
A group of people inside waiting in line
You can not infer they are inside.
exists e1 x1 x2 x3 x4 x5.(in(e1,x5) & n_line(x5) & Actor(e1,x1) & v_wait(e1) & on(x1,x3) & n_landing(x3) & of(x3,x4) & n_stair(x4) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & in(e1,x4) & n_line(x4) & Actor(e1,x3) & v_wait(e1) & (x2 = x3) & r_inside(x2) & n_people(x2) & n_group(x1))