A group of people huddled together behind a yellow gate.
The people are standing on the escalator.
People cannot huddle together in an escalator.
exists e1 p1 s1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & behind(e1,x4) & n_gate(x4) & a_yellow(s1) & Theme(s1,x4) & exists s2.(Theme(s2,x3) & a_together(s2)) & Recipient(e1,p1) & Topic(e1,x3) & v_huddle(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(n_escalator(x2) & n_people(x1) & on(e1,x2) & Actor(e1,x1) & v_stand(e1))