The dressed up young people are sitting in chairs while they wait.
The people are sitting down.
if the people are sitting in chairs then the people are sitting down.
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 s1 x1.(n_people(x1) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1))