Refer to the input text as context and select the correct relationship between 'Harpoon Brewery' and 'Beer' from the available options.
Options: operator, chief executive officer, product/material produced, parent organization

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