Conversation so far:
when does america's got talent start filming
Season 15 of America's Got Talent begins production in March 2020 and premieres in summer.
when does season 14 of america's got talent end
Season fourteen of America's Got Talent, an American talent show competition, began broadcasting in the United States during 2019, from May 28 to September 18 on NBC.

Question: who won
Self-contained rewrite: who won in season 14 of america's got talent