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: Two amateur magnet fishers - a hobby in which people use magnets tied to ropes to "fish" for metal in water - say they were shocked when they pulled a World War Two grenade from a canal.

Magnet fishers pull World War Two grenade from canal