user: Question: How many items are listed for U.S. viewers for episode number 5 in the series?
Columns: ['No. in series', 'Title', 'Directed by', 'Written by', 'Original air date', 'U.S. viewers (millions)']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '" Pilot "', 'Andy Ackerman', 'Kari Lizer', 'March13,2006', '12.36']
SQL:

assistant: SELECT COUNT("U.S. viewers (millions)") FROM "Table" WHERE "No. in series" = 5.0;