What was the challenge for episode 28?
CREATE TABLE table_24798489_2 (challenge VARCHAR, episode_number VARCHAR)
SELECT challenge FROM table_24798489_2 WHERE episode_number = 28
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_24798489_2 (challenge VARCHAR, episode_number VARCHAR) Question: What was the challenge for episode 28? [/INST] SELECT challenge FROM table_24798489_2 WHERE episode_number = 28 </s>