People gathered and sitting down in a large school auditorium.
People are in a school auditorium.
People in a school auditorium are the subject of sentence 1.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_thing(x4) & in(e2,x6) & n_auditorium(x6) & of(x6,x7) & n_school(x7) & a_large(s2) & Theme(s2,x6) & a_down(s1) & Manner(e2,s1) & Actor(e2,x5) & v_sit(e2) & (x4 = x5) & n_thing(x1) & Theme(e1,x3) & Actor(e1,x2) & v_gather(e1) & (x1 = x3) & n_people(x2))
exists p1 x1.(exists x2 x3.(in(x1,x2) & n_auditorium(x2) & of(x2,x3) & n_school(x3)) & n_people(x1))