Answer based on context:

In what was, at the time, the most-watched NFL regular season game since 1996, the Patriots faced the Cowboys, the NFC's only remaining unbeaten team. The Patriots' first drive of the game spanned 74&#160;yards and ended in a 6-yard touchdown catch by Moss from Brady. After three punts, the Patriots' lead increased to 14-0 after another Brady touchdown pass, this one from 35&#160;yards out to Welker. In the second quarter, the Cowboys got on the scoreboard when they culminated a 64-yard, 10-play drive with a 38-yard field goal by Nick Folk. On their ensuing possession, the Patriots advanced 12&#160;yards before Brady was strip-sacked by defensive end Greg Ellis; defensive end Jason Hatcher recovered the ball and returned it 29&#160;yards for a touchdown, cutting the Patriots' lead to 14-10. The Patriots responded with a 12-play, 72-yard drive that ended on a 12-yard touchdown pass from Brady to Welker, his second of the day. The Cowboys then moved the ball 84&#160;yards, keeping pace with the Patriots when Tony Romo threw to Terrell Owens for a 12-yard touchdown grab of his own, giving the game a 21-17 score at halftime. In the third quarter, after a Patriots punt, an 8-yard touchdown catch from Romo to wide receiver Patrick Crayton put the Patriots behind 24-21. However, the Patriots offense continued to move the ball too, with a 77-yard drive ending on a one-yard touchdown reception by Kyle Brady. Following a Cowboys punt that gave the Patriots the ball in Cowboys territory, the Patriots appeared to extend their lead on a 43-yard Moss touchdown catch, but the play was reversed as Moss was found not have caught the ball. A roughing the passer penalty was called on the play, though, setting up a 45-yard Gostkowski field goal to make the score 31-24. The Cowboys would punt early in the fourth quarter. Four plays later, Brady threw his fifth touchdown pass of the day, a franchise record. Stallworth's 69-yard catch gave the Patriots a 38-24 lead, but the Cowboys quickly responded with a 72-yard kickoff returnby Tyson Thompson. The Cowboys turned that return into three points on a 23-yard field goal by Folk. The Patriots then ate more clock, moving 61&#160;yards in just over six minutes, adding to their lead on a 22-yard Gostkowski field goal. Romo was intercepted by Seau on the next play, allowing the Patriots to run out more clock before Kyle Eckel ran in for a 1-yard touchdown. Romo then kneeled to end the game with a 48-27 final.

Who threw the first touchdown of the game?
Brady