Task: Question Answering
Input (English): Passage: The Ravens collected their second shutout of the season against the Steelers. The defense set a new team record by collecting 9 sacks against the strong Pittsburgh Steelers offense. Todd Heap and Steve McNair hooked up to score the first touchdown of the game in the 1st quarter. Jamal Lewis rushed for the second touchdown in the second quarter. Adalius Thomas returned a fumble by Pittsburgh quarterback Ben Roethlisberger for a touchdown in the 3rd quarter.  The 27 point margin of victory was the Ravens' largest against the Steelers to this point (since surpassed on September 11, 2011, a 35-7  Ravens victory), and the second shutout recorded against the Steelers this season.  After being sidelined for 2 games, Ray Lewis returned to the lineup and recorded one of the 9 sacks.  With the win, the Ravens improved to 9-2. 
Question: How many TDs did the Ravens score in the first quarter? 
Answer type: Number 
Output (English): 1.