CREATE TABLE table_19954 ("Episode No." TEXT, "Episode Title" TEXT, "UK Broadcast Date" TEXT, "Presenter" TEXT, "Details of Journey" TEXT, "Countries Visited" TEXT)

What are the details of the journey for the episode titled 'Zambezi Express'?
SELECT "Details of Journey" FROM table_19954 WHERE "Episode Title" = 'Zambezi Express'
SELECT "Details of Journey" FROM "table_19954" WHERE "Episode Title" = 'Zambezi Express'