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: As Andrea in the crop duster passed over Susan, she could see the landing strip.
 Question: Why does the 'she' refer to andrea?
Example Output: Because Andrea is in the sky. She passed over Susan, so she's the only one who could see.

Example Input: Sentence: Grace was happy to trade me her sweater for my jacket. She thinks it looks dowdy on her.
 Question: Why does the 'it' refer to the sweater?
Example Output: Because The jacket looked dowdy on Grace and she would trade her sweater for it.

Example Input: Sentence: Tom gave Ralph a lift to school so he wouldn't have to drive alone.
 Question: Why does the 'he' refer to tom?
Example Output:
Because Tom was driving and would have been alone without Ralph.