Sylvia McNair (born June 23, 1956) is an American opera singer and classical recitalist who has also achieved notable success in the Broadway and cabaret genres. McNair, a soprano, has made several critically acclaimed recordings and has won two Grammy Awards.
McNair won a Grammy for her opera performances.
She snippet doesn't say what the won the Grammys for as she isn't just an opera singer. I think the AI assumes she did because the first sentence states she's an opera singer.