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: Boston Marathon bomb suspect Dzhokhar Tsarnaev has pleaded not guilty to all charges in his first court appearance, as blast victims looked on.

Boston bomb accused Dzhokhar Tsarnaev denies charges