What is the relationship between Moscow Exchange and Moscow 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.

Moscow Exchange Suspends Trading for Second Time This Month Moscow Exchange Suspends Trading for Second Time This Month Market participants reported difficulties withdrawing orders and inaccurate order book data for derivative instruments.

Answer: headquarters_location