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: James asked Robert for a favor but he refused. Question: Who refused?
Example Output: ['Robert', 'James']

Example Input: Sentence: Carol believed that Rebecca regretted that she had stolen the watch. Question: Who is stole the watch?
Example Output: ['Carol', 'Rebecca']

Example Input: Sentence: Jane knocked on Susan's door but she did not get an answer. Question: Who did not get an answer?
Example Output:
Susan, Jane