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_27 (interface VARCHAR, controller VARCHAR, codename VARCHAR)
### Question:
Which interface uses Sandforce with a code name of Sierra Star?
### Answer:
SELECT interface FROM table_name_27 WHERE controller = "sandforce" AND codename = "sierra star"