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_28538368_2 (young_rider_classification VARCHAR, winner VARCHAR)
### Question:
Who was the young rider classification when Alessandro Petacchi won?
### Answer:
SELECT young_rider_classification FROM table_28538368_2 WHERE winner = "Alessandro Petacchi"