Trying to snap a three-game losing streak, the Texans flew to Cleveland Browns Stadium for a Week 12 duel with the Cleveland Browns.  In the first quarter, Houston drew first blood as QB Sage Rosenfels completed a 17-yard TD pass to WR Kevin Walter.  In the second quarter, the Texans increased their lead as kicker Kris Brown got a 31-yard field goal.  The Browns would respond with kicker Phil Dawson getting a pair of 32-yard field goals.  Houston would end the half with Brown making a 31-yard field goal.  In the third quarter, the Texans continued their dominance as Brown nailed a 36-yard field goal.  From there on out, Houston's defense kept Cleveland's offense in check. With the win, not only did the Texans improve to 4-7, but they finally got their first road win of the season.
Question: How many more field goals were kicked during the first half compared to the second half?
Answer: 3