Citizens are being blessed.
The people are being blessed by the Pope.
Just because people are being blessed it does not mean they are being blessed by the Pope.  People do not have to be citizens.
exists e1 x1.(ne_nam_citizens(x1) & Theme(e1,x1) & v_bless(e1))
exists e1 x1 x2.(ne_tim_pope(x2) & n_people(x1) & Actor(e1,x2) & Theme(e1,x1) & v_bless(e1))