Answer based on context:

In a pattern similar to the Dallas game of week one, the Niners jumped out to an early 17-0 lead, only to fall victim to a hailstorm of penalties, turnovers and a strong Bears comeback, 28-20. A blocked punt led to a Niner touchdown in the third minute of the game, but a seven-minute drive later in the quarter stalled in the red zone and only yielded a field goal. After a short punt in the second quarter, the Niners scored a second touchdown, but Chicago answered with their first touchdown just before halftime. To start the third quarter, the Niners held the ball for more than nine minutes. But they once again failed in the red zone, and settled for another field goal. The Bears scored three touchdowns in the second half to emerge with the win. The Niners were called on 16 penalties for 118 yards, losing one touchdown run, and keeping Bears' drives alive on multiple occasions.  Colin Kaepernick threw three interceptions, lost a fumble, and was called for unsportsmanlike conduct after an interception. The Niners outgained Chicago 361-216, and held the Bears to only 46 rushing yards, but the overwhelming weight of the turnovers and penalties negated any other advantage. The Bears scored touchdowns the last four times they had the ball. This was also the first time since 1985 that the Bears won a road game against the 49ers, ending the Bears' 8-game road losing streak against the 49ers (the Bears were outscored in those 8 losses by a score of 271 to 49).

How many turnovers did Kaepernick make?
4