Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_26198709_1 (rank__week_ INTEGER, production_code VARCHAR)
### Question:
What is the weeks rank for the episode with the production code 1alf05? 
### Answer:
SELECT MAX(rank__week_) FROM table_26198709_1 WHERE production_code = "1ALF05"