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: Imagine if, at the first coronavirus briefing in Downing Street last year, Boris Johnson had said that he would put limits on our lives and the economy for 15 months.

Covid: Why has Boris Johnson opted for caution on lockdown rules?