While looking in the mirror, a man is shaving his beard with a manual razor.
man is shaving
It is explicitly stated that the man is shaving.  This is just a restatement with less supporting details.
exists e2 e1 s1 x1 x2 x3 x4 x5.(n_beard(x4) & of(x4,x2) & n_male(x2) & n_mirror(x2) & while(e2,e1) & Theme(e2,x4) & Actor(e2,x3) & v_shave(e2) & with(x4,x5) & n_razor(x5) & a_manual(s1) & Theme(s1,x5) & n_man(x3) & in(e1,x2) & Actor(e1,x1) & v_look(e1) & n_thing(x1))
exists e1 x1.(Actor(e1,x1) & v_shave(e1) & n_man(x1))