(2012 Tennessee Titans season)Despite Chris Johnson breaking out with his first 100+ yard rushing game for the Titans this season, Tennessee was unable to contain a dynamic Texans team, who recorded two touchdowns on defense en route to blowout the former Oilers 38-14.  With the win, the Texans improved to 4-0 for the first time in franchise history. On the opening drive of the game, Matt Schuab threw an 11-yard touchdown to make it 7-0. 2 drives later, Arian Foster scored a touchdown of 4 yards to make it 14-0 at the end of the first. Tennessee got going in the second with a 19-yard touchdown making it 14-7. That was the score at the half. In the third Matt Hasselbeck dropped back but was picked of by Danieal Manning and returned for a touchdown making it 21-7. On Houston's next drive, Schuab threw a 28-yard touchdown to Owen Daniels to make it 28-7 at the end of the third. In the fourth Tennessee fumbled giving it to Houston who took a 31-7 lead. Tennessee then threw an interception returned 63 yards for a touchdown. It was 38-7. Tennessee scored late in the game to make it 38-14 and that was the final score.
Question: How many points was Houston winning by at halftime?
Answer: 7