Table: cities_underworld_episodes
Columns: production_no
episode_no
original_airdate
episode_title
host

Question: What is the episode number of the episode that originally aired on January 26, 2009 and had a production number smaller than 38?
SQL: SELECT COUNT("episode_no") FROM cities_underworld_episodes WHERE "original_airdate" = 'january 26, 2009' AND "production_no" < 38