The sun is setting behind a group of people.
Some people are outside in the evening.
The people are outside in the evening while the sun is setting.
exists e1 x1 x2 x3.(n_sun(x1) & behind(e1,x2) & of(x2,x3) & n_people(x3) & n_group(x2) & Actor(e1,x1) & v_set(e1))
exists s1 x1 x2.(n_evening(x2) & in(s1,x2) & Theme(s1,x1) & a_outside(s1) & n_people(x1))