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_name_67 (gdp___bn__ VARCHAR, capital VARCHAR)

### Question ###
What was the Gdp (bn) for the region that has ioannina as its Capital?

### Accurate SQL ###

SELECT gdp___bn__ FROM table_name_67 WHERE capital = "ioannina"