In Week 11, the Lions hosted the Cleveland Browns in an interconference shootout. The Browns built a big lead in the first quarter, scoring first with a 44-yard field goal by Phil Dawson. After a 31-yard Jason Hanson field goal, Cleveland scored 21 points on Brady Quinn touchdowns to Mohamed Massaquoi (59 yards), Chansi Stuckey (40 yards), Joshua Cribbs (four yards). The Lions answered with three consecutive TD passes from Matthew Stafford to Aaron Brown (26 yards) and Kevin Smith (25 yards) and a 75-yard catch and run TD for Calvin Johnson. The Browns responded with a 29-yard field goal just before halftime. In the 3rd quarter Will Heller of the Lions caught a one-yard TD pass. The Browns received a safety when Stafford was tackled in his own end zone and called for intentional grounding. The Browns retook the lead on a two-yard TD catch by Michael Gaines and a Jamal Lewis two-point conversion. Stafford was intercepted on the next Lions possession, but the Lions stopped the Browns on 4th and 5. Then they drove 88 yards. With 2 seconds left, Stafford raced out of the pocket and threw a pass into the end zone which was intercepted by Brodney Pool, but the pick was nullified on a Hank Poteat pass interference penalty, giving the Lions one more play with no time left on the clock.  Stafford was brutally hit by two Browns defenders on the play, and suffered what turned out to be a major shoulder separation of his left (non-throwing) arm; he had to come out for the final play and backup Daunte Culpepper went in, but the Browns called time-out; under NFL rules injured players must come out for one play, and the Browns timeout thus made Stafford eligible to return to the field; he told the coaches he wanted to return for the final play (pleading to coaches "If you need me to throw the ball, I can throw the ball") and was allowed to go back in. He then threw a touchdown to Brandon Pettigrew, and Jason Hanson tacked on the extra point for the win. Stafford became the youngest QB to throw five touchdown passes in a game since the AFL-NFL merger in 1970. He also set a record for passing yards in a game by a rookie with 422. For his performance, Stafford won NFC Offensive Player of the Week and Pepsi Rookie of the Week. The game was made into an NFL Film, with Matthew Stafford mic'ed up. It was shown on NFL Network's NFL Replay and Wired for Sound and became a segment in the "Quarterback Duels" episode of NFL Top 10, as well as Showtime's Inside the NFL. The company's founder Steve Sabol said the Lions' game-winning drive was the most dramatic film he has seen in over 30 years.
Question: How many touchdown passes did Brady Quinn throw?
Answer: 4