Take context from the input text and decide on the accurate relationship between '888 Holdings' and 'gambling' from the options provided.
Options: founded by, industry, creator, 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