Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_81 (date_from VARCHAR, position VARCHAR, name VARCHAR)
### Question:
What date did Toumani Diagouraga, who played position MF, start?
### Answer:
SELECT date_from FROM table_name_81 WHERE position = "mf" AND name = "toumani diagouraga"