user: Question: who directed the production code 2T5710?
Columns: ['No.', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'U.S. viewers (million)']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '" Pilot "', 'Mark Piznarski', 'Rob Thomas', 'September22,2004', '475258', '2.49']
SQL:

assistant: SELECT "Directed by" FROM "Table" WHERE "Production code" = '2T5710';