Task: Question Understanding
Input (English): Passage: Coming off their home win over the Packers, the Titans flew to Soldier Field for a Week 10 interconference duel with the Chicago Bears. In the first quarter, Tennessee trailed early as Bears QB Rex Grossman completed a 5-yard touchdown pass to RB Matt Forte. In the second quarter, the Titans answered with QB Kerry Collins completing a 10-yard TD pass to TE Bo Scaife. In the third quarter, Tennessee took the lead as Collins completed a 12-yard TD pass to WR Justin Gage (a former Bear). In the fourth quarter, the Titans increased their lead as RB LenDale White got a 2-yard touchdown run. Chicago tried to rally as Grossman got a 1-yard touchdown run, yet Tennessee's defense stiffened for the win. With the win, the Titans kept their perfect season alive at 9-0.
Question: How many of the touchdowns were passing touchdowns?
Output (English): number