Answer based on context:

Coming off their win over the Bills, the Dolphins flew to Cowboys Stadium for a Week 12 interconference duel with the Dallas Cowboys on Thanksgiving.  Miami delivered the game's opening punch in the first quarter with a 26-yard field goal from kicker Shayne Graham, but the Cowboys answered in the second quarter with kicker Dan Bailey getting a 32-yard field goal, followed by quarterback Tony Romo completing a 5-yard touchdown pass to wide receiver Laurent Robinson.  The Dolphins would close out the half with a 28-yard field goal from Graham. Miami would regain the lead in the third quarter with a 27-yard field goal from Graham, followed by quarterback Matt Moore finding wide receiver Brandon Marshall on a 35-yard field goal.  Dallas struck back in the fourth quarter with Romo completing an 18-yard touchdown pass to Robinson.  The Dolphins would reply with a 23-yard field goal from Graham, but the Cowboys got the last laugh with Bailey nailing the game-winning 28-yard field goal.

How many scoring drives were there in the first half?
3