What is the relationship between 'Wynn Resorts' and 'casino' in the context of the input sentence.
Options: subsidiary, operator, stock exchange, product/material produced

BOSTON (AP) -- Wynn Resorts won a key state approval for its Boston-area casino late Friday, bringing the $1.7 billion project billed as the state's largest single private development another step closer to finally breaking ground.
product/material produced