Who is they?
The assembly line workers were told they had been fired by the company, because they had moved the jobs overseas.

OPTIONS:
- The assembly line workers
- the company

A:
The assembly line workers

Who is he?
Mike helped Jack with his assignment because he felt like doing so.

OPTIONS:
- Mike
- Jack

A:
Mike

Who is it?
There is currently more work on coreference resolution than on chunking because it is a problem that is nearly solved.

OPTIONS:
- coreference resolution
- chunking

A:
chunking