Question: What was the broadcast date of the episode that visited South Africa?
SQL: SELECT "UK Broadcast Date" FROM "2-15211468-2" WHERE "Countries Visited" = 'South Africa';

Question: Which country did Natalia Makarova visit?
SQL: SELECT "Countries Visited" FROM "2-15211468-2" WHERE "Presenter" = 'Natalia Makarova';

Question: What is the broadcast date for the episode titled, "From Hong Kong to Ulaanbaatar"?
SQL: SELECT "UK Broadcast Date" FROM "2-15211468-2" WHERE "Episode Title" = '"From Hong Kong to Ulaanbaatar"';

Question: What is the broadcast date for the episode titled, "St. Petersburg to Tashkent"?
SQL: SELECT "UK Broadcast Date" FROM "2-15211468-2" WHERE "Episode Title" = '"St. Petersburg to Tashkent"';