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: Thomson visited Cooper's grave in 1765. At that date he had been dead for five years.
 Question: Why does the 'he' refer to cooper?
Because dead people are in the graves.

Sentence: The cat was lying by the mouse hole waiting for the mouse, but it was too impatient.
 Question: Why does the 'it' refer to the cat?
Because it was too impatient. : The cat was lying by the mouse hole waiting.

Sentence: The sculpture rolled off the shelf because it wasn't anchored.
 Question: Why does the 'it' refer to the sculpture?

Because The object not anchored is the one likely to roll.