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_29102100_1 (prod_code INTEGER, directed_by VARCHAR)
### Question:
What was the production code of the episode directed by Rondell Sheridan? 
### Answer:
SELECT MAX(prod_code) FROM table_29102100_1 WHERE directed_by = "Rondell Sheridan"