Detailed Instructions: In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Q: Context: Of historic note, the iconic photo of New York Giants quarterback Y. A. Tittle, helmet-less, bloodied and kneeling, was taken at Pitt Stadium in 1964 following a Giants' loss to the Steelers on September 20. Link Information: Over the next four seasons, he won several individual awards, twice set the league single-season record for touchdown passes, and led the Giants to three straight NFL championship games. Although he was never able to deliver a championship to the team, Tittle's time in New York is regarded among the glory years of the franchise.

In his final season, Tittle was photographed bloodied and kneeling down in the end zone after a tackle by a defender left him helmetless. Question: How long did the quarterback who had his photo taken after a defeat at Pitt Stadium play for the New York Giants?
A:
Answer: 4