query: SELECT role_code ,  count(*) FROM Employees GROUP BY role_code
question: What the code of each role and the number of employees in each role?
query_toks: SELECT role_code , count ( * ) FROM Employees GROUP BY role_code
query_toks_no_value: select role_code , count ( * ) from employees group by role_code
question_toks: What the code of each role and the number of employees in each role?