The dressed up young people are sitting in chairs while they wait.
People are waiting for something.
The people are sitting as they wait
exists e1 e2 p1 s1 x1 x2.(n_thing(x1) & n_people(x1) & a_young(s1) & Theme(s1,x1) & r_up(x1) & Theme(e1,x1) & v_dress(e1) & exists e3.(Actor(e3,x1) & v_wait(e3)) & while(e2,p1) & in(e2,x2) & n_chair(x2) & Actor(e2,x1) & v_sit(e2))
exists e1 x1 x2.(for(e1,x2) & n_thing(x2) & Actor(e1,x1) & v_wait(e1) & n_people(x1))