You need to read the given sentence and construct a question about the information present in the sentence. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is unique. The question must involve coreference resolution which is a task of clustering mentions in text that refer to the same underlying real world entities. For example let's take a sentence 'I voted for Obama because he was most aligned with my values, she said.' Here in this example 'I', 'my', and 'she' belong to the same cluster and 'Obama' and 'he' belong to the same cluster. Now let's discuss another example , original sentence: 'I voted for Trump because he was most aligned with my values',John said. Now here is the same sentence with resolved coreferences: 'John voted for Trump because Trump was most aligned with John's values',John said.

Ex Input:
Sentence: The journalists interviewed the stars of the new movie. They were very cooperative, so the interview lasted for a long time.

Ex Output:
Who was cooperative?


Ex Input:
Sentence: The table won't fit through the doorway because it is too narrow.

Ex Output:
What is too narrow?


Ex Input:
Sentence: Bill thinks that calling attention to himself was rude of Bert.

Ex Output:

Who called attention to himself?