user: Question: Name the directed by for "Blue Christmas"
Columns: ['Series #', 'Season #', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [47.0, 1.0, '"Car Wash"', 'Bill Dickson', 'David E. Kelley', 'October25,1999', '3M01']
SQL:

assistant: SELECT "Directed by" FROM "Table" WHERE "Title" = '"Blue Christmas"';