Are you talking about part 4?
If we are using Logic, then if P = C, then first prove that
C = Chair. otherwise why not use P = Chair.
You can use computer logic on many of Q's questions that require a TRUE / FALSE response.
Ordinary Logic where Questions provide answers as in -
Was the election suppose to be rigged? Yes/No
Did good people prevent the rigging? = Assumes previous answer is yes.