Given a statement and question, generate the answer to the question such that the answer is contained in the statement.

[Q]: statement: In the puberty stage is a time of significant mental, emotional and social modification., question: What stage is a time of significant mental, emotional and social modification?
[A]: puberty

[Q]: statement: the process in which DNA is written is necessary for cell division, question: The process in which DNA is written is necessary for what?
[A]: cell division

[Q]: statement: Mammals took advantage of an asteroid event., question: What did mammals take advantage of?
[A]:
an asteroid event