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.

Sentence: Jane knocked on Susan's door, but there was no answer. She was out.
 Question: Why does the 'She' refer to susan?
Because Jane knocked on Susan's door but he is not response.

Sentence: The actress used to be named Terpsichore, but she changed it to Tina a  few years ago, because she figured it was too hard to pronounce.
 Question: Why does the 'it' refer to terpsichore?
Because Terpsichore was too hard to pronounce.

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?

Because The jacket looked dowdy on Grace and she would trade her sweater for it.