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_14710984_2 (young_rider_classification VARCHAR, mountains_classification VARCHAR, stage VARCHAR)
### Question:
Who won the young rider classification in Stage 9 where the mountain classification was Emanuele Sella?
### Answer:
SELECT young_rider_classification FROM table_14710984_2 WHERE mountains_classification = "Emanuele Sella" AND stage = 9