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: In July, Kamtchatka declared war on Yakutsk. Since Yakutsk's army was much  better equipped and ten times larger, they were defeated within weeks.
 Question: Why does the 'they' refer to kamtchatka?

A: Because Yakusk had a bigger and better army. Kamtchatka didn't. So Kamtchatka lost.
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Q: Sentence: Madonna fired her trainer because she couldn't stand her boyfriend.
 Question: Why does the 'she' refer to madonna?

A: Because the trainer has nothing to do with madonna's own boyfriend.
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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 here by this time.
 Question: Why does the 'he' refer to bob?

A:
Because Adam was already at work, and Bob was the one that needed to arrive.
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