Warren Buffett's Berkshire Hathaway was burned by a fire last year — and it owns the insurer paying out for the losses

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· *Warren Buffett shared an unfortunate anecdote in his annual shareholder letter.*
· *One of Berkshire Hathaway's businesses, Lubrizol, suffered a fire last year.*
· *Luckily for Lubrizol, insurance will cover a lot of its losses.*
· *Unluckily for Buffett, Berkshire owns one of the key insurers that will pay out to...