Utilize the input text as a context reference, choose the right relationship between Dixons Carphone and LONDON from the options. Options: 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.

LONDON (Reuters) - British electrical goods and mobile phone retailer Dixons Carphone has sealed a deal with Sprint Corp. , the U.S. mobile network operator, that could see it open and manage up to 500 Sprint-branded stores in the United States.

Answer: headquarters_location