The conversation between human and AI assistant.
[|Human|] Which was the longest Wimbledon men's final?
[|AI|] The 2019 men's final was the longest final in Wimbledon's history, lasting 4 hours and 57 minutes. Roger Federer faced Novak Djokovic in this match and lost to him in five sets.
[|Human|] 
Which was the longest Wimbledon men's final?