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_204_599 ( id number, "party" text, "first duma" text, "second duma" text, "third duma" text, "fourth duma" text )

### Question ###
how long was the first duma on rigtists

### Accurate SQL ###

SELECT "first duma" FROM table_204_599 WHERE "party" = 'rightists'