What is the relationship between Sergio Marchionne and Fiat in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.
Text: TURIN (Reuters) - Consolidation continues to be necessary in the auto industry but there is nothing new to report on Fiat Chrysler's (FCHA.MI) (FCAU.N) desire for a tie-up with General Motors (GM.N), FCA CEO Sergio Marchionne said on Friday.
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