user: Question: What date did Toumani Diagouraga, who played position MF, start?
Columns: ['Date From', 'Date To', 'Position', 'Name', 'From']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['2007-08-08', '2007-08-13', 'GK', 'Chris Weale', 'Bristol City']
SQL:

assistant: SELECT "Date From" FROM "Table" WHERE "Position" = 'MF' AND "Name" = 'Toumani Diagouraga';