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.

Example Input: Sentence: They broadcast an announcement, but a subway came into the  station and I couldn't hear over it .
 Question: Why does the 'it' refer to the subway?
Example Output: Because it is hard to hear over a noise generator.

Example Input: Sentence: Bob paid for Charlie's college education, but now Charlie acts as though it never happened. He is very hurt.
 Question: Why does the 'He' refer to bob?
Example Output: Because now Charlie acts as though it never happened. He is very hurt Bob paid for Charlie's college education.

Example Input: 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?
Example Output:
Because The journalists wanted to interview the stars. The stars had a choice. The stars agreed.