A group of people stand on wet stairs with two trees behind them.
A group of people are standing on the stairs.
"A group of people are standing on the stairs" is a less detailed restatement of "A group of people stand on wet stairs with two trees behind them."
exists e1 s1 x1 x2 x3 x4.(on(e1,x3) & with(x3,x4) & behind(x4,x1) & n_thing(x1) & n_tree(x4) & card_eq_2(x4) & n_stair(x3) & a_wet(s1) & Theme(s1,x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3.(n_stair(x3) & on(e1,x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))