Refer to the input text as context and select the correct relationship between 'bwin' and 'sports betting' from the available options.
Options: publisher, position held, owned by, product/material produced

Bwin, created by the merger of sports betting group bwin and online poker group PartyGaming in 2011, had a market value of about 816 million pounds as of Wednesday close, nearly triple that of GVC.
product/material produced