Given a statement and question, generate the answer to the question such that the answer is contained in the statement.
--------
Question: statement: arithmetic can be done online, question: How can arithmetic be done?

Answer: online


Question: statement: Locusts can spread disease and destroy crops., question: What can spread disease and destroy crops?

Answer: Locusts


Question: statement: Ages 12-18 is a period of significant mental, emotional, and social changes, question: What is a period of significant mental, emotional, and social changes?

Answer:
Ages 12-18