You are given a sentence and a question, construct 2 answer options in a specific format i.e. ['option1','option2']. The answer options have to be text spans from the given sentence. Only one among the options should be the correct answer to the given question. Note that, the correct answer to the given question will require understanding of coreference resolution. Coreference resolution is the task of clustering mentions in text that refer to the same underlying real world entities.

Q: Sentence: The doctor informed Kate that she had retired and presented several options for future treatment. Question: Who had retired?

A: ['Kate', 'doctor']
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Q: Sentence: Kirilov ceded the presidency to Shatov because he was less popular. Question: Who was less popular?

A: ['Shatov', 'Kirilov']
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Q: Sentence: Dan had to stop Bill from toying with the injured bird. He is very compassionate. Question: Who is compassionate?

A:
['Dan', 'Bill']
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