user: Question: How many episodes have the title "The World of Who"?
Columns: ['Episode #', 'Original airdate (UK)', 'Episode title', 'Doctor Who episode', 'Webcast link']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['S1', '26 March 2005', '"A New Dimension"', 'Preview', 'N/A']
SQL:

assistant: SELECT COUNT("Episode #") FROM "Table" WHERE "Episode title" = '"The World of Who"';