What are the staff roles of the staff who
CREATE TABLE Project_Staff (
    role_code VARCHAR,
    date_from VARCHAR,
    date_to VARCHAR
)
SELECT role_code FROM Project_Staff WHERE date_from > '2003-04-19 15:06:20' AND date_to < '2016-03-15 00:33:18'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What are the staff roles of the staff who ### Input: CREATE TABLE Project_Staff (
    role_code VARCHAR,
    date_from VARCHAR,
    date_to VARCHAR
) ### Response: SELECT role_code FROM Project_Staff WHERE date_from > '2003-04-19 15:06:20' AND date_to < '2016-03-15 00:33:18'