context: The Mavericks finished 49–33, one game ahead of Phoenix for the eighth and final playoff spot, which meant that they would once again have to face their in-state rivals, the San Antonio Spurs, who were the top seed in the Western Conference with a 62–20 record. In Game 1 in San Antonio, Dallas had an 81–71 lead in the fourth quarter, but the Spurs rallied back and took Game 1, 85-90. However, the Mavs forced 22 turnovers in Game 2 to rout the Spurs 113–92, splitting the first two games before the series went to Dallas. In Game 3, Manu Ginóbili hit a shot that put the Spurs up 108–106 with 1.7 seconds left, but a buzzer-beater by Vince Carter gave the Mavs the victory, putting them up 2–1 in the series. The Spurs took Game 4 in Dallas 93–89 despite a late Dallas comeback after the Spurs at one point had a 20-point lead and later won Game 5 at home, 109–103, giving them a 3–2 series lead. The Mavs avoided elimination in Game 6 at home by rallying in the fourth quarter, winning 111–113. Game 7 was on the Spurs home court, and the Spurs beat the Mavericks 119–96, putting an end to the Mavericks season.
question: How many points did the Mavericks win Game 2 by against the Spurs?
answer: 21