Table schema:
CREATE TABLE department (creation VARCHAR, department_id VARCHAR); CREATE TABLE management (department_id VARCHAR, head_id VARCHAR); CREATE TABLE head (head_id VARCHAR, born_state VARCHAR)

Question: What are the distinct creation years of the departments managed by a secretary born in state 'Alabama'?
SQL: SELECT DISTINCT T1.creation FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id JOIN head AS T3 ON T2.head_id = T3.head_id WHERE T3.born_state = 'Alabama'