The 49ers and the group attempting to bring the 2016 Summer Olympic Games to San Francisco have formed a partnership that would make it possible to turn the football team's proposed new stadium at Candlestick Point into an Olympic stadium. A temporary platform 12 feet above the football field and 20,000 additional seats would enable the stadium to hold Opening and Closing Ceremonies, track and field competition, and soccer finals should San Francisco win an international competition to host the Games a decade from now, the group San Francisco 2016 announced Friday.