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_9 (apparatus VARCHAR, rank_final VARCHAR, competition_description VARCHAR)
### Question:
What is Apparatus, when Rank-Final is greater than 6, and when Competition Description is "U.S. Championships"?
### Answer:
SELECT apparatus FROM table_name_9 WHERE rank_final > 6 AND competition_description = "u.s. championships"