A group of people stand in front of a large apartment building.
A bunch of people congregate in front of an apartment building after someone pulled a fire alarm.
Just because they are in front of the building doesn't mean someone pulled a fire alarm.
exists e1 s1 x1 x2 x3 x4 x5.(in(e1,x3) & of(x3,x4) & n_building(x4) & of(x4,x5) & n_apartment(x5) & a_large(s1) & Theme(s1,x4) & n_front(x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 p1 x1 x2 x3 x4 x5.(exists e2 x6 x7 x8.(Theme(e2,x7) & Actor(e2,x6) & v_pull(e2) & n_alarm(x7) & of(x7,x8) & n_fire(x8) & n_person(x6)) & after(e1,p1) & in(e1,x3) & of(x3,x4) & n_building(x4) & of(x4,x5) & n_apartment(x5) & n_front(x3) & Actor(e1,x1) & v_congregate(e1) & of(x1,x2) & n_people(x2) & n_bunch(x1))