TASK DEFINITION: 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.
PROBLEM: Sentence: I poured water from the bottle into the cup until it was full.
 Question: Why does the 'it' refer to the cup?

SOLUTION: Because cup gets water. So it gets full.

PROBLEM: Sentence: When Tommy dropped his ice cream, Timmy giggled, so father gave him a sympathetic look.
 Question: Why does the 'him' refer to tommy?

SOLUTION: Because Tommy would be upset about dropping his ice cream.

PROBLEM: Sentence: The path to the lake was blocked, so we couldn't reach it .
 Question: Why does the 'it' refer to the lake?

SOLUTION:
Because The path is something you use to get to the lake, you're already on the path.