user: Question: What is the lowest rank that the Protestants population holds?
Columns: ['Name', 'Rank', 'Out of', 'Source', 'Year']
Types: ['text', 'real', 'text', 'text', 'real']
Sample row: ['Muslim population', 7.0, '67', 'Demographics of Islam', 2005.0]
SQL:

assistant: SELECT MIN("Rank") FROM "Table" WHERE "Name" = 'Protestants population';