IN:
Multi-choice problem: [he]

John could not understand his waiter, because he spoke Spanish.

OPTIONS:
- John
- his waiter

OUT:
his waiter

IN:
Multi-choice problem: [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

OUT:
chunking

IN:
Multi-choice problem: [she]

Sally gave Kelly a doll because she had extra dolls.

OPTIONS:
- Sally
- Kelly

OUT:
Sally

IN:
Multi-choice problem: [they]

The jurors deliberated on the defendants' fate for hours, but they did not reach a verdict.

OPTIONS:
- The jurors
- the defendants

OUT:
The jurors