In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Context: Gooderham and Worts began producing whisky in 1837 in Toronto as a side business to their wheat milling Link Information: Gooderham and Worts began producing whisky in 1837 in Toronto as a side business to their wheat milling Question: In what year did Gooderham and Worts stop producing alchol under their own brand name?
Answer: 1837