user: Question: How many different people wrote the episode titled "Reflection of Desire"?
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'U.S. viewers (millions)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [115.0, 1.0, '"The Longest Night (Part II)"', 'Edward Allen Bernero', 'Edward Allen Bernero', 'September22,2010', '14.13']
SQL:

assistant: SELECT COUNT("Written by") FROM "Table" WHERE "Title" = '"Reflection of Desire"';