a group of people looking out of a window onto the street.
a group of people are looking out the window at the car crash
We can't see what they are looking at, so it may not be a car crash.
exists e1 x1 x2 x3 x4 x5.(n_street(x5) & a_topic(x1) & of(x1,x2) & r_out(e1) & of(e1,x4) & onto(x4,x5) & n_window(x4) & Actor(e1,x3) & v_look(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3 x4 x5.(n_crash(x4) & of(x4,x5) & n_car(x5) & n_window(x3) & out(e1,x3) & at(x3,x4) & Actor(e1,x1) & v_look(e1) & of(x1,x2) & n_people(x2) & n_group(x1))