TASK DEFINITION: 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.
PROBLEM: Sentence: There are too many deer in the park, so the park service brought in a small pack of wolves. The population should decrease over the next few years.

SOLUTION: Which population will decrease?

PROBLEM: Sentence: Beth didn't get angry with Sally, who had cut her off, because she stopped and counted to ten.

SOLUTION: Who counted to ten?

PROBLEM: Sentence: Sam Goodman's biography of the Spartan general Xenophanes conveys a vivid sense of the difficulties he faced in his research.

SOLUTION:
Who faced difficulties?