Coming off their win over the Jets, the Patriots returned home for an AFC duel against the Kansas City Chiefs on Monday Night Football. Kansas City took the lead in the first quarter, with a 26-yard field goal by placekicker Ryan Succop, in what would be the Chiefs' only score of the game. The Patriots grabbed the lead in the second quarter, with a 52-yard touchdown pass from quarterback Tom Brady to tight end Rob Gronkowski, followed by a 21-yard field goal by placekicker Stephen Gostkowski just before halftime. The Patriots added to their lead in the third quarter, with Brady throwing another touchdown pass to Gronkowski - this time from 19 yards, followed by Julian Edelman returning a punt 72 yards for a touchdown, and a 19-yard field goal by Gostkowski at the end of the third quarter. The Patriots added another score near the end of the game, with a 4-yard touchdown run by running back Shane Vereen.
Question: How many field goals were kicked in the first half?
Answer: 2