Lots of people gathering in a line.
people are lining up
Lining up is the same as gathering in line.
exists e1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & in(e1,x4) & n_line(x4) & Actor(e1,x3) & v_gather(e1) & (x2 = x3) & n_people(x2) & n_lot(x1))
exists e1 s1 x1.(a_up(s1) & Manner(e1,s1) & Actor(e1,x1) & v_line(e1) & n_people(x1))