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.
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Question: Sentence: The journalists interviewed the stars of the new movie. They were very cooperative, so the interview lasted for a long time. Question: Who was cooperative?

Answer: ['stars', 'journalists']


Question: Sentence: In July, Kamtchatka declared war on Yakutsk. Since Yakutsk's army was much better equipped and ten times larger, they were defeated within weeks. Question: Who was defeated

Answer: ['Yakutsk', 'Kamchatka']


Question: Sentence: Sam Goodman's biography of the Spartan general Xenophanes conveys a vivid sense of the difficulties he faced in his research. Question: Who faced difficulties?

Answer:
Xenophanes, Sam