A hospital staff watching something.
A hospital staff is blind.
A person who is watching something cannot be blind.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_watch(e1) & n_thing(x4) & (x1 = x3) & n_staff(x1) & of(x1,x2) & n_hospital(x2))
exists s1 x1 x2.(Theme(s1,x1) & a_blind(s1) & n_staff(x1) & of(x1,x2) & n_hospital(x2))