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_30139175_3 (uk_total_viewers VARCHAR, episode_no VARCHAR)
### Question:
How many viewers in the UK did episode 50 have?
### Answer:
SELECT uk_total_viewers FROM table_30139175_3 WHERE episode_no = 50