user: Question: Which season has the Werder Bremen Club and is in Round 2R?
Columns: ['Season', 'Competition', 'Round', 'Club', '1st Leg', '2nd Leg']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1983–84', 'European Cup', '1R', 'Grasshopper', '1–0 (H)', '2–2 (A)']
SQL:

assistant: SELECT "Season" FROM "Table" WHERE "Club" = 'Werder Bremen' AND "Round" = '2R';