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.

Example Input: Sentence: Bill passed the half-empty plate to John because he was full. Question: Who was full?
Example Output: ['Bill', 'John']

Example Input: Sentence: Esther figures that she will save shipping costs if she builds her factory in Springfield instead of Franklin, because most of her customers live there. Question: In which town do most of Esther's customers live?
Example Output: ['Springfield', 'Franklin']

Example Input: Sentence: The father carried the sleeping boy in his arms. Question: Whose arms?
Example Output:
father, boy