Multiple students sitting on stairs at a school.
A group of students are inside a school.
students sitting on stairs at a school means students are inside a school
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & at(e1,x5) & n_school(x5) & on(e1,x4) & n_stair(x4) & Actor(e1,x3) & v_sit(e1) & (x1 = x3) & n_student(x1) & (x1 = x2) & ne_nam_multiple(x2))
exists p1 x1 x2.(exists x3.(inside(x1,x3) & n_school(x3)) & of(x1,x2) & n_student(x2) & n_group(x1))