Sept 1 (Reuters) - Online gambling firm 888 Holdings stepped up a billion pound battle for Bwin.party Digital Entertainment on Tuesday, submitting a revised takeover proposal as it looks to see off rival interest from GVC Holdings (Other OTC: GMVHF - news ) .
Refer to the input text as context and select the correct relationship between '888 Holdings' and 'gambling' from the available options.
Options: location of formation, owner of, industry, distributed by