Utilize the input text as a context reference, choose the right relationship between 'Sergio Marchionne' and 'Fiat' from the options.
Options: employer, chief executive officer, business division, founded by

TURIN, July 3 Consolidation continues to be necessary in the auto industry but there is nothing new to report on Fiat Chrysler's desire for a tie-up with General Motors, FCA CEO Sergio Marchionne said on Friday.
employer