user: Question: What is the total number of Year, when Award is "vamsi berkley award", and when Category is "best actor"?
Columns: ['Year', 'Award', 'Category', 'Film', 'Result']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1986.0, 'Kinnera Award', 'Best Actor', 'Kaliyuga Pandavulu', 'Won']
SQL:

assistant: SELECT COUNT("Year") FROM "Table" WHERE "Award" = 'vamsi berkley award' AND "Category" = 'best actor';