user: Question: When "I Feel Good" is the title and Joe Sachs is the writer how many series numbers are there?
Columns: ['Series #', 'Season #', 'Title', 'Directed by', 'Written by', 'Original air date']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [310.0, 1.0, '"Life After Death"', 'Christopher Misiano', 'Joe Sachs', 'September25,2008']
SQL:

assistant: SELECT COUNT("Series #") FROM "Table" WHERE "Written by" = 'Joe Sachs' AND "Title" = '"I Feel Good"';