Refer to the input text as context and select the correct relationship between 'Brewing' and 'Beer' from the available options.
Options: product/material produced, position held, creator, business division

The key players in the Beer Market in the US are Anheuser Boston Beer Carlsberg Heineken and SAB Miller while other prominent vendors include Anchor Brewing Bear Republic Brewing Harpoon Brewery Lagunitas Brewing New Belgium Brewing Pabst Brewing and Summit Brewing
product/material produced