A group of people, one holding a yellow and blue umbrella, are standing at the top of some stairs.
A group of co-workers wait at the top of the stairs, all huddled under one person's umbrella.
Just because it's a group of people it does not mean they are co-workers or that they huddled underneath one umbrella.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_top(x8) & at(e2,x8) & of(x8,x9) & n_stair(x9) & Actor(e2,x1) & v_stand(e2) & of(x1,x2) & rel(x2,x3) & Theme(e1,x5) & Actor(e1,x4) & v_hold(e1) & n_umbrella(x7) & a_blue(s1) & Theme(s1,x7) & n_yellow(x6) & subset_of(x7,x5) & subset_of(x6,x5) & (x3 = x4) & n_thing(x3) & card_eq_1(x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3 x4.(n_stair(x4) & n_top(x3) & at(e1,x3) & of(x3,x4) & all x5.(n_thing(x5) -> exists e2 x6 x7 x8.(rel(x4,x5) & under(e2,x8) & n_umbrella(x8) & of(x8,x7) & n_person(x7) & card_eq_1(x7) & Theme(e2,x6) & v_huddle(e2) & (x5 = x6))) & Actor(e1,x1) & v_wait(e1) & of(x1,x2) & n_co-worker(x2) & n_group(x1))