user: Question: What is the earliest year in which Requiem for a Dream was in the running for Best Director?
Columns: ['Year', 'Award', 'Category', 'Title', 'Result']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1999.0, 'Sundance Film Festival', 'Best Director', 'Pi', 'Won']
SQL:

assistant: SELECT MIN("Year") FROM "Table" WHERE "Title" = 'Requiem for a Dream' AND "Category" = 'Best Director';