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_54217 ( "Character" text, "Position" text, "Actor" text, "First Episode" text, "Final Episode" text, "Duration" text, "Final Episode Count" real )

### Question ###
What is the average number for a final episode featuring maxine valera?

### Accurate SQL ###

SELECT AVG("Final Episode Count") FROM table_54217 WHERE "Character" = 'maxine valera'