Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_15211468_1 (countries_visited VARCHAR, presenter VARCHAR)
### Question:
What countries are visited in the episode presented by Brian B. Thompson?
### Answer:
SELECT countries_visited FROM table_15211468_1 WHERE presenter = "Brian B. Thompson"