Table: rail_journeys
Columns: episode_no
episode_title
uk_broadcast_date
presenter
countries_visited

Question: What is the UK broadcast date of the episode where Chris Bonington was the presenter?
SQL: SELECT "uk_broadcast_date" FROM rail_journeys WHERE "presenter" = 'chris bonington'

Question: What is the episode title of the episode with Ben Okri as the presenter?
SQL: SELECT "episode_title" FROM rail_journeys WHERE "presenter" = 'ben okri'

Question: Who is the presenter of the episode broadcast in the UK on 1996-09-25?
SQL: SELECT "presenter" FROM rail_journeys WHERE "uk_broadcast_date" = '1996-09-25'

Question: What is the UK broadcast date of the episode with Ben Okri as the presenter?
SQL: SELECT "uk_broadcast_date" FROM rail_journeys WHERE "presenter" = 'ben okri'