What is the relationship between 'Man Group' and 'hedge fund' in the context of the input sentence.
Options: stock exchange, chief executive officer, industry, currency

SHANGHAI, Aug 31 (Reuters) - Chinese authorities have taken Li Yifei, chairwoman of British hedge fund manager Man Group (LSE: EMG.L - news ) Plc's China unit, into custody to help with a police probe into market volatility, Bloomberg reported on Monday, citing a person familiar with the matter.
industry