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: A 15-year-old boy was "frightened" when he fatally stabbed a would-be carjacker, a court has heard.

Southampton teen murder case: Accused 'stabbed victim out of fear'