In June, the first ever WPT online poker open on the partypoker U.S. Network became the first WPT real money online gaming events to take place in the United States since the Unlawful Internet Gambling Enforcement Act was adopted in 2006.
What is the relationship between 'partypoker' and 'online poker' in the context of the input sentence.
Options: employer, distributed by, owner of, industry