Conversation so far:
when is the fa cup semi final played
when was the fa cup final played in 2019
The 2019 FA Cup Final was played at Wembley Stadium in London, England, on 18 May 2019.
how big is wembley stadium
The size of Wembley Stadium's field is 105 m by 68 m.
who played in the 2019 fa cup final
The 2019 FA Cup Final was contested by Manchester City F.C. and Watford F.C.

Question: who won
Self-contained rewrite: who won the 2019 fa cup final