Plot: The 22nd Mastermind final comes from Coventry Cathedral, where civil servant John Wilson, George Davidson, a senior lecturer in chemistry, librarian Graham Roe, and English tutor Stephen Wood do battle for the 1994 title - and the coveted Caithness Glass trophy, to be presented by Bamber Gascoigne. Their specialist subjects are: beers and breweries in Britain; the life and works of John Dalton; American classical music 1910-70, and the Irish rebellion