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.
What is the relationship between 'Dixons Carphone' and 'LONDON' in the context of the input sentence.
Options: brand, distributed by, product/material produced, headquarters location