The coach criticized the player because he did not adhere to the team's formation.

Who is "he" in this prior sentence?
the player
There is currently more work on coreference resolution than on chunking because it is a problem that is nearly solved.

Who is "it" in this prior sentence?
chunking
Jackie Chan is starting to become like Chuck Norris, because he is getting close to the age that he retired in his career.

Who is "he" in this prior sentence?

Jackie Chan