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: I stuck a pin through a carrot. When I pulled the pin out, it left a hole.
 Question: Why does the 'it' refer to the pin?
Example Output: Because a carrot cannot leave a hole in itself.

Example Input: Sentence: Dan had to stop Bill from toying with the injured bird. He is very cruel.
 Question: Why does the 'He' refer to bill?
Example Output: Because Dan stopped Bill, so you know Bill is the evil one.

Example Input: Sentence: The large ball crashed right through the table because it was made of styrofoam.
 Question: Why does the 'it' refer to the table?
Example Output:
Because The ball is made of styrofoam.

