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_31 (rider VARCHAR, rounds VARCHAR, motorcycle VARCHAR)
### Question:
Who is riding the Ducati 999 RS in Round 7?
### Answer:
SELECT rider FROM table_name_31 WHERE rounds = "7" AND motorcycle = "ducati 999 rs"