user: Question: What is the average Episode # with a share of 9, and #35 is rank and less than 8.21 viewers?
Columns: ['Episode #', 'Title', 'Air Date', 'Rating', 'Share', '18–49', 'Viewers', 'Rank']
Types: ['real', 'text', 'text', 'real', 'real', 'real', 'real', 'text']
Sample row: [42.0, '"The Manhattan Project"', 'September 25, 2008', 6.6, 11.0, 3.3, 9.77, '#26']
SQL:

assistant: SELECT AVG("Episode #") FROM "Table" WHERE "Share" = 9.0 AND "Rank" = '#35' AND "Viewers" < 8.21;