user: Question: How many episodes have the production code IP04004?
Columns: ['No. in series', 'No. in season', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [33.0, 1.0, '"Mac and Dennis: Manhunters"', 'Fred Savage', 'Charlie Day & Jordan Young & Elijah Aron', 'September18,2008', 'IP04002']
SQL:

assistant: SELECT COUNT("Title") FROM "Table" WHERE "Production code" = 'IP04004';