user: Question: What is the late 1941 when 1978 veteran membership is 20000
Columns: ['! Late 1941', 'Late 1942', 'Sept. 1943', 'Late 1943', 'Late 1944', '1978 Veteran membership']
Types: ['text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Bosnia and Herzegovina', 20000.0, 60000.0, 89000.0, 108000.0, 100000.0]
SQL:

assistant: SELECT "! Late 1941" FROM "Table" WHERE "1978 Veteran membership" = 20000.0;