Analyze the relationship between 'Harpoon Brewery' and 'Beer' within the context of the input sentence.
Options: operator, product/material produced, chief executive officer, 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