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