CREATE TABLE "table1_24798489_1" (
  "episode_number" real,
  "location" text,
  "original_airdate" text,
  "challenge_winner" text,
  "challenge" text
);

Question: What is the original airdate of the episode where the challenge was three overstuffed sandwiches? 
SQL: SELECT "original_airdate" FROM "table1_24798489_1" WHERE "challenge"='Three overstuffed sandwiches';

Question: Who was the challenge winner in the episode that originally aired on January 28, 2009?
SQL: SELECT "challenge_winner" FROM "table1_24798489_1" WHERE "original_airdate"='January 28, 2009';

Question: What is the original airdate of the episode where the challenge is "Southwestern Exposure", a twelve-egg omelette"?
SQL: SELECT "original_airdate" FROM "table1_24798489_1" WHERE "challenge"='\"Southwestern Exposure\", a twelve-egg omelette';

Question: How many episodes had New York, New York as the location?
SQL: SELECT COUNT("episode_number") FROM "table1_24798489_1" WHERE "location"='New York, New York';

Question: What is the original airdate of the episode where the challenge is a "7-pound monster breakfast burrito"?
SQL: SELECT "original_airdate" FROM "table1_24798489_1" WHERE "challenge"='\"7-pound monster breakfast burrito\"';