Utilize the input text as a context reference, choose the right relationship between Marissa Mayer and Yahoo 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.

The acquisition will join dozens of other mostly small deals that have been engineered by Yahoo CEO Marissa Mayer during the past three years in an attempt to boost advertising sales.

Answer: employer