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: Jeremy Corbyn urged Momentum founder Jon Lansman not to stand for the vacant post of Labour's general secretary, the BBC understands.

Corbyn urged Jon Lansman to drop general secretary bid, BBC understands