Utilize the input text as a context reference, choose the right relationship between 'Bwin' and 'sports betting' from the options.
Options: chairperson, director/manager, legal form, product/material produced

Bwin.Party, created by the merger of sports betting group Bwin and online poker group PartyGaming in 2011, said in November that it was considering a range of proposals from interested parties.
product/material produced