user: Question: What season was Freiburger FC the RL Süd (2nd) team?
Columns: ['Season', 'RL Süd (1st)', 'RL Süd (2nd)', 'RL Südwest (1st)', 'RL Südwest (2nd)']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1963–64', 'Hessen Kassel', 'FC Bayern Munich', 'Borussia Neunkirchen', 'FK Pirmasens']
SQL:

assistant: SELECT "Season" FROM "Table" WHERE "RL Süd (2nd)" = 'Freiburger FC';