CREATE TABLE ROLES (role_description VARCHAR(255), role_code VARCHAR(255)); CREATE TABLE Employees (role_code VARCHAR(255), employee_name VARCHAR(255))
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"