CREATE TABLE table_name_64 (category VARCHAR, title VARCHAR, result VARCHAR, year VARCHAR)

What Category has a Result of Nominated, Year of 2006, and the Title of Pierrepoint?
SELECT category FROM table_name_64 WHERE result = "nominated" AND year = 2006 AND title = "pierrepoint"
SELECT "category" FROM "table_name_64" WHERE "nominated" = "result" AND "pierrepoint" = "title" AND "year" = 2006