user: Question: What is the sum of Year, when Title is "Mnet Director's Cut"?
Columns: ['Year', 'Title', 'Role', 'Network', 'Notes']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2004.0, "Epik High's Love and Delusion", 'Himself', 'Mnet', 'Series regular']
SQL:

assistant: SELECT SUM("Year") FROM "Table" WHERE "Title" = 'Mnet Director''s Cut';