Utilize the input text as a context reference, choose the right relationship between Indycar and Indianapolis 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.

Under this campaign, we'll be targeting Indycar enthusiasts Indianapolis 500 and an expanded group which will be similar to the folks we're targeting under the two brand awareness groups.

Answer: headquarters_location