user: ### NOW ANSWER:
Question: What is the year of the winner from the Army school, plays the Halfback position, and has a % of points possible of 39.01%?
Columns: ['Year', 'Winner', 'School', 'Position', 'Points', '% of Points Possible']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1935.0, 'Jay Berwanger Category:Articles with hCards *', 'Chicago', 'Halfback', '84', '43.08%']
SQL:

assistant: SELECT SUM("Year") FROM "Table" WHERE "School" = 'Army' AND "Position" = 'Halfback' AND "% of Points Possible" = '39.01%';