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: Sentence: Bob paid for Charlie's college education. He is very grateful. Question:Who is grateful?
Example solution: [ 'Bob','Charlie']
Example explanation: The sentence clearly states that Bob paid for Charlies's college education, so Charlies is very grateful. The answer is Charlie and it lies in the options created. Therefore this is a positive example.

Problem: 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?

Solution: ['stars', 'journalists']