What is the relationship between apartment and London 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.

If the asking price is achieved it will be at the very top end of sales across mainland China, putting Shanghai's luxury apartment market on a similar level to Sydney, but well below London and New York.

Answer: location_of_formation