user: Question: If the episode is 6x03, what is the first broadcast total number?
Columns: ['Episode', 'First broadcast', 'Davids team', 'Lees team', 'Scores']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['6x01', '13 April 2012', 'Mel Giedroyc and Chris Tarrant', 'Alexander Armstrong and Alex Jones', '3–2']
SQL:

assistant: SELECT "First broadcast" FROM "Table" WHERE "Episode" = '6x03';