title: Gears of War 3
context: Like its predecessors, the game received widespread critical acclaim from critics. Critics praised its story, voice acting, graphics and visuals, and music, but criticized its lack of innovation. Gears of War 3 sold over 3 million copies and was the second best selling game in the U.S.
question: How many copies of Gears of War 3  were sold?
answers: over 3 million copies