Question: The Sleaford, England brewery founded in 1777, now owned by The Bass Maltings, had an annual output of how many barrels by 1877?
Sentence (from "Bass Maltings, Sleaford"): Constructed between 1901 and 1907 to Herbert A. Couchman's design, the maltings are the largest group of malt houses in England; they have been designated Grade II* on the National Heritage List for England, recognising them as "particularly important ... of more than special interest."
Relevant evidence: No