Utilize the input text as a context reference, choose the right relationship between Niki Lauda and Mercedes from the options. Options: 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.

** Mercedes F1 non-executive chairman Niki Lauda has dismissed a report suggesting Formula One rival Red Bull could switch from Renault to Mercedes engines with Aston Martin branding.

Answer: employer