CREATE TABLE table_5293 ("Season" TEXT, "Champion" TEXT, "Constructor" TEXT, "Teams' Champion" TEXT, "Secondary Class" TEXT, "Nations Cup" TEXT, "Winter Series Champion" TEXT)

What team's champion has a secondary class of Matt Rao for a Winter Series Champion of Not Held?
SELECT "Teams' Champion" FROM table_5293 WHERE "Winter Series Champion" = 'not held' AND "Secondary Class" = 'matt rao'
SELECT "Teams' Champion" FROM "table_5293" WHERE "Secondary Class" = 'matt rao' AND "Winter Series Champion" = 'not held'