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: The actress used to be named Terpsichore, but she changed it to Tina a  few years ago, because she figured it was easier to pronounce.
 Question: Why does the 'it' refer to tina?

A: Because Tina is easy to pronounce.
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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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Q: Sentence: I saw Jim yelling at some guy in a military uniform with a huge red  beard. I don't know why he was, but he looked very unhappy.
 Question: Why does the 'he' refer to jim?

A:
Because Jim was yelling and would be the one that was not known why he was yelling.
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