In the context of the input sentence, determine the relationship between '888 Holdings' and 'gambling'.
Options: creator, industry, founded by, chief executive officer

(Reuters) - Online gambling firm 888 Holdings (888.L) stepped up a billion pound battle for Bwin.party Digital Entertainment (BPTY.L) on Tuesday, submitting a revised takeover proposal as it looks to see off rival interest from GVC Holdings (GVC.L).
industry