Refer to the input text as context and select the correct relationship between 'Sergio Marchionne' and 'Fiat' from the available options.
Options: employer, publisher, distribution format, director/manager

DETROIT (AP) - Fiat Chrysler CEO Sergio Marchionne has canceled plans Tuesday to attend the Frankfurt International Motor Show in Germany, an indication that the company may be getting close to a contract agreement with the United Auto Workers union.
employer