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_25055040_22 (youth_classification VARCHAR, sprint_classification VARCHAR, most_courageous VARCHAR)
### Question:
When Mark Cavendish wins sprint classification and Maarten Tjallingii wins most courageous, who wins youth classification?
### Answer:
SELECT youth_classification FROM table_25055040_22 WHERE sprint_classification = "Mark Cavendish" AND most_courageous = "Maarten Tjallingii"