What is the relationship between Inter Milan 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.

Real are at the beginning of a pre-season tour of China where they will play friendlies against Inter Milan on Monday and AC Milan on Thursday.

Answer: headquarters_location