What is the relationship between Indycar and Indianapolis in the context of the input sentence. Choose an answer from: 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