user: Question: What's the title when the genre is Drama and network of KBS2 happening before 2011?
Columns: ['Year', 'Title', 'Hangul / Japanese', 'Role', 'Network', 'Genre']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [2005.0, 'Nonstop 5', '논스톱 5', 'Guest Ep.208', 'MBC', 'Sitcom']
SQL:

assistant: SELECT "Title" FROM "Table" WHERE "Year" < 2011.0 AND "Network" = 'KBS2' AND "Genre" = 'Drama';