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.
Refer to the input text as context and select the correct relationship between 'partypoker' and 'online poker' from the available options.
Options: industry, owner of, distributed by, employer