user: Question: What Round was the Winning Team Engstler Motorsport Maurer Motorsport?
Columns: ['Round', 'Circuit', 'Date', 'Winning driver', 'Winning team']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1 2', 'Oschersleben', '13 May', 'Franz Engstler Franz Engstler', 'Engstler Motorsport Engstler Motorsport']
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Winning team" = 'Engstler Motorsport Maurer Motorsport';