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: The archaeologists have concluded that neanderthals lived in Laputa 20,000 years ago. They hunted for evidence on the river banks. Question: Who hunted for evidence?
Example Output: ['neanderthals', 'archaeologists']

Example Input: Sentence: When Tommy dropped his ice cream, Timmy giggled, so father gave him a sympathetic look. Question: Who got the look from father?
Example Output: ['Timmy', 'Tommy']

Example Input: Sentence: As Ollie carried Tommy up the long winding steps, his legs ached. Question: Whose legs ached?
Example Output:
Tommy, Ollie