Complex sentence: The SEC Women's Basketball Tournament (sometimes known simply as the SEC Tournament) is the tournament that determines the Southeastern Conference (SEC) women's basketball team that receives the conference's automatic bid to the NCAA women's basketball tournament.
Split into simpler sentences: The SEC Women's Basketball Tournament (sometimes known simply as the SEC Tournament) is the conference championship tournament in women's basketball for the Southeastern Conference (SEC). The winner receives the conference's automatic bid to the NCAA women's basketball tournament.