user: Question: When 22 is the number what is the episode title?
Columns: ['No.', '#', 'Episode title', 'Director', 'Writer(s)', 'U.S. original airdate', 'Prod. code']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'real']
Sample row: [6.0, 1.0, '"Masters and Students"', 'Todd Waterman', 'David Slack', 'February11,2011', 106.0]
SQL:

assistant: SELECT "Episode title" FROM "Table" WHERE "No." = 22.0;