CREATE TABLE table_30503 ("Conference" CLOB, "Regular Season Winner" CLOB, "Conference Player of the Year" CLOB, "Conference Tournament" CLOB, "Tournament Venue  ( City ) " CLOB, "Tournament Winner" CLOB)

During the Big Seven Conference which team was the regular season winner?
SELECT "Regular Season Winner" FROM table_30503 WHERE "Conference" = 'Big Seven Conference'
SELECT "Regular Season Winner" FROM "table_30503" WHERE "Conference" = 'Big Seven Conference'