user: Question: What episode number has an audience share of 10%?
Columns: ['Episode number', 'Season', 'Original airing', 'Total viewers', 'Audience share (average)', 'Season viewer average']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Season 1', '17 February 2008', '4.2m', '18%', '2.7m']
SQL:

assistant: SELECT "Episode number" FROM "Table" WHERE "Audience share (average)" = '10%';