Utilize the input text as a context reference, choose the right relationship between Ruth Porat and Chief Financial Officer 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 arrival of new Chief Financial Officer Ruth Porat in May has assuaged investor concerns that Google boss Larry Page's spending on projects outside the main search-advertising business -- from driverless cars to computerised spectacles -- would keep accelerating without paying off in higher revenue.

Answer: position_held