user: Question: How many viewers in the UK did episode 50 have?
Columns: ['Episode no.', 'US Airdate', 'US Total viewers', 'UK Airdate', 'UK Total viewers']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, '1 January 2011', '2,600,000', '25 February 2011', '190,000']
SQL:

assistant: SELECT "UK Total viewers" FROM "Table" WHERE "Episode no." = 50.0;