What is the original airdate of the episode where the challenge was three overstuffed sandwiches? 
CREATE TABLE table_24798489_1 (original_airdate VARCHAR, challenge VARCHAR)
SELECT original_airdate FROM table_24798489_1 WHERE challenge = "Three overstuffed sandwiches"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_24798489_1 (original_airdate VARCHAR, challenge VARCHAR) Question: What is the original airdate of the episode where the challenge was three overstuffed sandwiches?  [/INST] SELECT original_airdate FROM table_24798489_1 WHERE challenge = "Three overstuffed sandwiches" </s>