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_278229_1 ( commandery VARCHAR )

### Question ###
when changsha is the commandery what is the commandery capital?

### Accurate SQL ###

SELECT commandery AS capital FROM table_278229_1 WHERE commandery = "Changsha 長沙"