CREATE TABLE head (head_id DECIMAL, name TEXT, born_state TEXT, age DECIMAL)
CREATE TABLE department (department_id DECIMAL, name TEXT, creation TEXT, ranking DECIMAL, budget_in_billions DECIMAL, num_employees DECIMAL)
CREATE TABLE management (department_id DECIMAL, head_id DECIMAL, temporary_acting TEXT)

What are the names of the states where at least 3 heads were born?
SELECT born_state FROM head GROUP BY born_state HAVING COUNT(*) >= 3
SELECT "born_state" FROM "head" GROUP BY "born_state" HAVING COUNT(*) >= 3