ใครคือผู้ชนะการแข่งขันใน Southwestern Athletic Conference?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
Who was the tournament winner in the Southwestern Athletic Conference?It is not neccessary to use all the tables.
 table_28884880_4:  (tournament_winner [ VARCHAR ] conference [ VARCHAR) ]
SELECT tournament_winner FROM table_28884880_4 WHERE conference = "Southwestern Athletic conference"