Two rules were created to deal with this non-standard pronoun use, and anaphora resolution was limited to cases covered by these rules:  An actor in the subject of a sentence's main verb (based on dependency parsing) is taken as the antecedent of a sentence-initial he/she in the following sentence.
the ENB-IPCC test-set does not come from the same corpus that the system was developed for, and serves as a way to test the system on texts from a slightly different domain, in terms of syntactic structures and lexical items involved.