Table: rail_journeys_3
Columns: episode_no
episode_title
uk_broadcast_date
narrator
writer
details_of_journey
countries_visited

Question: Which details of journey had simon hoggart as a narrator?
SQL: SELECT "details_of_journey" FROM rail_journeys_3 WHERE "narrator" = 'simon hoggart'

Question: Which countries visited had an episode number of less than 7 when Ray Gosling was the writer?
SQL: SELECT "countries_visited" FROM rail_journeys_3 WHERE "episode_no" < 7 AND "writer" = 'ray gosling'