user: Question: Name the production code for 60 number in series
Columns: ['No. in series', 'No. in season', 'Title', 'Director', 'Writer(s)', 'Original air date', 'Production code', 'U.S. viewers (million)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [45.0, 1.0, '" Wait for It "', 'Pamela Fryman', 'Carter Bays & Craig Thomas', 'September24,2007', '3ALH01', '8.12']
SQL:

assistant: SELECT "Production code" FROM "Table" WHERE "No. in series" = 60.0;