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: Head teachers have held a minute's silence for teacher Ann Maguire, who was stabbed to death in front of her pupils at a school in Leeds.

Ann Maguire stabbing: School heads pay silent tribute