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: Lewis Ludlow has been sentenced after planning to kill 100 people in a London terror attack, having been instructed by the Islamic State group (IS) to make Britons "pay in their blood". Here's the story of how he was caught.

Lewis Ludlow: How the Oxford Street terror plotter was caught