Given an AZP z, we determine its antecedent as follows: where P R is our set of 10 Chinese overt pronouns and C is the set of candidate antecedents of z.
we apply Formula (11) to each AZP z, searching for the candidate antecedent c and overt pronoun p that maximize P (l=1|p, k, c) when p is used to fill the ZP gap left behind by z.