user: Question: What is the episode number that was first broadcast on 3 September 2010?
Columns: ['Episode', 'First broadcast', 'Davids team', 'Lees team', 'Scores']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['4x01', '23 July 2010', 'Fern Britton and Richard E. Grant', 'Sanjeev Bhaskar and Martin Clunes', '5–6']
SQL:

assistant: SELECT "Episode" FROM "Table" WHERE "First broadcast" = '3 September 2010';