Refer to the input text as context and select the correct relationship between 'Wynn Resorts' and 'casino' from the available options.
Options: chief executive officer, creator, product/material produced, business division

Wynn Resorts Ltd. fell on an analyst’s report from Asia that a junket group operating out of the company’s Macau casino may have lost as much as HK$2 billion ($258 million) to thievery.
product/material produced