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: 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.


[Q]: Sentence: The journalists interviewed the stars of the new movie. They were very cooperative, so the interview lasted for a long time.
 Question: Why does the 'They' refer to the stars?
[A]: Because The journalists wanted to interview the stars. The stars had a choice. The stars agreed.


[Q]: Sentence: John ordered Bill to leave, so an hour later he left.
 Question: Why does the 'he' refer to bill?
[A]:
Because John cannot order himself to leave.