In this task you need to give reasons to justify the pronoun coreference relations. Each of the provided inputs contains a sentence with a target pronoun and a question about how to justify the coreference between a noun phrase and the target pronoun. Good practices involve the discussion about how the descriptions attached to the targeted pronoun relate to the noun phrase candidate in the question. The reasoning could come from one or multiple following knowledge types about commonsense: First: 'Property', the knowledge about property of objects (e.g., ice is cold). Second: 'Object', the knowledge about objects (e.g., cats have ears). Third: 'Eventuality', the knowledge about eventuality (e.g., 'wake up' happens before 'open eyes'). Forth: 'Spatial', the knowledge about spatial position (e.g., object at the back can be blocked). Fifth: 'Quantity', the knowledge about numbers (e.g., 2 is smaller than 10). Sixth: all other knowledge if above ones are not suitable. Write the sentence in natural language.

Q: Sentence: Sam Goodman's biography of the Spartan general Xenophanes conveys a vivid sense of the difficulties he faced in his research.
 Question: Why does the 'he' refer to goodman?

A: Because general Xenophanes conveys a vivid sense of the difficulties he faced in his research but Sam Goodman's biography of the Spartan.
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Q: Sentence: Fred covered his eyes with his hands, because the wind was blowing sand around. He lowered them when the wind stopped.
 Question: Why does the 'them' refer to his hands?

A: Because blowing sand likely to covered by hands.
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Q: Sentence: Adam can't leave work here until Bob arrives to replace him. If Bob had  left home for work on time, he would be gone by this time.
 Question: Why does the 'he' refer to adam?

A:
Because Adam can't leave work here until Bob arrives to replace him. If Bob had left home for work on time, he would be gone by this time.
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