user: Question: Who wrote episode number 48
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'U.S. viewers (million)', 'Original air date', 'Production code']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [37.0, 1.0, '" Do-Over "', 'Don Scardino', 'Tina Fey', '8.7', 'October30,2008', 301.0]
SQL:

assistant: SELECT "Written by" FROM "Table" WHERE "No. in series" = 48.0;