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.

Input: Consider Input: Sentence: During a game of tag, Ethan chased Luke because he was "it". Question: Who was "it"?

Output: ['Ethan', 'Luke']


Input: Consider Input: Sentence: Esther figures that she will save shipping costs if she builds her factory in Springfield instead of Franklin, because none of her customers live there. Question: In which town do none of Esther's customers live?

Output: ['Springfield', 'Franklin']


Input: Consider Input: Sentence: James asked Robert for a favor but he refused. Question: Who refused?


Output: ['Robert', 'James']