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: Zimbabwe's President Robert Mugabe has resigned, bringing an end to 37 years of rule and sparking jubilant celebrations in the nation's streets.

Zimbabwe's Robert Mugabe resigns, ending 37-year rule