user: Question: What is Round 2 when Round 4 is Double and Round 3 is Single?
Columns: ['From', 'Goal', 'Round 1', 'Round 2', 'Round 3', 'Round 4', 'Round 5', 'Round 6+']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1977.0, '200', 'Single', 'Single', 'Double', 'Double', 'Double', 'Double']
SQL:

assistant: SELECT "Round 2" FROM "Table" WHERE "Round 4" = 'Double' AND "Round 3" = 'Single';