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 sculpture rolled off the shelf because it wasn't level.
 Question: Why does the 'it' refer to the shelf?
Example Output: Because The sculpture was rolling; the shelf would not be level for the sculpture to roll.

Example Input: Sentence: Fred covered his eyes with his hands, because the wind was blowing sand around. He opened them when the wind stopped.
 Question: Why does the 'them' refer to his eyes?
Example Output: Because Eyes are what would normally be referred to as opened or closed.

Example Input: Sentence: We had hoped to place copies of our newsletter on all the chairs in the auditorium, but there were simply too many of them .
 Question: Why does the 'them' refer to chairs?
Example Output:
Because too many chairs would make it hard for us to put newspaper with matched amount.