A man is looking down.
A man stares at a glass that has just fallen and shattered.
Staring and looking down are not exactly the same thing.  A person can look down for reasons other than glass that has just fallen and shattered.
exists e1 s1 x1.(a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_look(e1) & n_man(x1))
exists e3 e1 e2 s1 s2 x1 x2 x3 x4.(at(e1,x2) & a_just(s2) & Manner(e3,s2) & Actor(e3,x4) & v_shatter(e3) & (x2 = x4) & a_just(s1) & Manner(e2,s1) & Actor(e2,x3) & v_fall(e2) & (x2 = x3) & n_glass(x2) & Actor(e1,x1) & v_stare(e1) & n_man(x1))