user: Question: What Category has a Result of Nominated, Year of 2006, and the Title of Pierrepoint?
Columns: ['Year', 'Award', 'Category', 'Title', 'Result']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1999.0, 'British Academy Television Award', 'Best Drama Series', 'Cold Feet', 'Nominated']
SQL:

assistant: SELECT "Category" FROM "Table" WHERE "Result" = 'Nominated' AND "Year" = 2006.0 AND "Title" = 'Pierrepoint';