CREATE TABLE table_name_76 (sport VARCHAR2, league VARCHAR2, city VARCHAR2, venue VARCHAR2)

Which sport was held in Huntsville at the Von Braun Center as part of the Southern Indoor Football League?
SELECT sport FROM table_name_76 WHERE city = "huntsville" AND venue = "von braun center" AND league = "southern indoor football league"
SELECT "sport" FROM "table_name_76" WHERE "city" = "huntsville" AND "league" = "southern indoor football league" AND "venue" = "von braun center"