Teenagers are looking out the window of a bus.
Dejected teens are staring gloomily out of the bus windows
The teenagers could be in any mood and staring in a variety of ways.
exists e1 x1 x2 x3.(n_window(x2) & out(e1,x2) & of(x2,x3) & n_bus(x3) & Actor(e1,x1) & v_look(e1) & n_teenager(x1))
exists e2 e1 s1 x1 x2 x3.(n_window(x2) & of(x2,x3) & n_bus(x3) & a_gloomily(s1) & Manner(e2,s1) & r_out(e2) & of(e2,x2) & Actor(e2,x1) & v_stare(e2) & n_teens(x1) & Theme(e1,x1) & v_deject(e1))