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 huge fire at a bus depot which destroyed 30 coaches, five minibuses and a car is being treated as arson.

Merthyr Tydfil bus depot blaze being treated as arson