Table schema:
CREATE TABLE ROLES (role_description VARCHAR, role_code VARCHAR); CREATE TABLE Employees (role_code VARCHAR, employee_name VARCHAR)

Question: What is the role of the employee named Koby?
SQL: SELECT T1.role_description FROM ROLES AS T1 JOIN Employees AS T2 ON T1.role_code = T2.role_code WHERE T2.employee_name = "Koby"