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 table_2518850_4 ( year_of_previous_participation VARCHAR, prefecture VARCHAR )

### Question ###
What was the year of previous participation for the school in the Kagoshima prefecture?

### Accurate SQL ###

SELECT year_of_previous_participation FROM table_2518850_4 WHERE prefecture = "Kagoshima"