CREATE TABLE table_50464 ("Series" TEXT, "Start" TEXT, "Finish" TEXT, "Winner" TEXT, "Runner-up" TEXT, "Third place" TEXT, "Winning mentor" TEXT, "Main host" TEXT)

Who was in third place when Guy Sebastian was the winning mentor and Andrew Wishart was the runner-up?
SELECT "Third place" FROM table_50464 WHERE "Winning mentor" = 'guy sebastian' AND "Runner-up" = 'andrew wishart'
SELECT "Third place" FROM "table_50464" WHERE "Runner-up" = 'andrew wishart' AND "Winning mentor" = 'guy sebastian'