Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE head (born_state VARCHAR)

### Question ###
What are the names of the states where at least 3 heads were born?

### Accurate SQL ###

SELECT born_state FROM head GROUP BY born_state HAVING COUNT(*) >= 3