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: The woman held the girl against her chest
 Question: Why does the 'her' refer to the woman?
Example Output: Because "held" is the action the woman is taking, she can't hold herself against her own chest.

Example Input: Sentence: Paul tried to call George on the phone, but he wasn't successful.
 Question: Why does the 'he' refer to paul?
Example Output: Because Paul was the person trying to perform an action.

Example Input: Sentence: This morning, Joey built a sand castle on the beach, and put a toy  flag in the highest tower, but this afternoon the tide  knocked it down.
 Question: Why does the 'it' refer to the sand castle?
Example Output:
Because the castle would be knocked down by the tide first.