What is the relationship between 'Man Group' and 'LONDON' in the context of the input sentence.
Options: headquarters location, publisher, brand, industry

LONDON (ShareCast) - (ShareCast News) - Shares (Berlin: DI6.BE - news ) in Man Group (LSE: EMG.L - news ) slumped following a press report that the chairman of the hedge fund manager's China unit, Li Yifei, has been taken into custody by Chinese authorities to assist with a police probe into market volatility.
headquarters location