A person wearing glasses is prepped for some kind of dental work.
a man is crying with pain
A man preparing dental work is not necessarily crying with pain.
exists e1 e2 s1 x1 x2 x3 x4 x5.(for(e2,x4) & of(x4,x5) & n_work(x5) & a_dental(s1) & Theme(s1,x5) & n_kind(x4) & Theme(e2,x1) & v_prep(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_glass(x3) & (x1 = x2) & n_person(x1))
exists e1 x1 x2.(with(e1,x2) & n_pain(x2) & Actor(e1,x1) & v_cry(e1) & n_man(x1))