Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Japan is in the grip of an elderly crime wave - the proportion of crimes committed by people over the age of 65 has been steadily increasing for 20 years. The BBC's Ed Butler asks why.

Why some Japanese pensioners want to go to jail