What is the relationship between Fininvest and Milan 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.

Italy's former prime minister Silvio Berlusconi, who controls Mediaset, has signed a pre-sale agreement to sell 48 percent of his AC Milan soccer club to a group led by Thai businessman Bee Taechaubol by the end of September, a spokesman for holding company Fininvest said on Sunday.

Answer: headquarters_location