Problem: The Second Goryeo-Khitan War was an 11th-century conflict between the kingdom of Goryeo and the Liao dynasty near what is now the border between China and North Korea. It was the second of the Goryeo-Khitan Wars, with the First Goryeo-Khitan War occurring in 993, the second in 1010, and the third in 1018. When King Seongjong died in 997, Liao invested his successor Wang Song as king of Goryeo . In 1009, he was assassinated by the forces of the general Gang Jo. Using it as a pretext, the Liao attacked Goryeo in the next year. They lost the first battle but won the second one, and Gang Jo was captured and killed. The Liao occupied and burnt the Goryeo capital Kaesong. The Khitan withdrew after Goryeo reaffirmed its tributary relationship with the Khitan.
Answer this question based on the article: How many years passed between the first and second Goryeo-Khitan Wars?
A: 25

Problem: Fresh off their win over the Jaguars, the Bears stayed at home for a Week 15 Thursday night battle with the New Orleans Saints. Chicago immediately got the lead as free safety Danieal Manning returned the game's opening kickoff 83 yards for a touchdown. The Saints would respond in the second quarter with quarterback Drew Brees compleing a 2-yard touchdown pass to running back Pierre Thomas, yet the Bears answered with rookie running back Matt Forte getting a 1-yard touchdown run, while quarterback Kyle Orton got a 6-yard touchdown run. New Orleans would begin to rally in the third quarter as Thomas got a 42-yard touchdown run. In the fourth quarter, the Sains took the lead as kicker Garrett Hartley made a 30-yard field goal, along with Brees completing an 11-yard touchdown pass to wide receiver Marques Colston. Afterwards, Chicago replied with a game-tying 28-yard field goal from kicker Robbie Gould. In overtime, the Bears clinched the victory as Gould nailed the game-winning 35-yard field goal. With the win, Chicago kept its playoff hopes alive by improving to 8-6.
Answer this question based on the article: How many yards long was Thomas' touchdown in the third quarter?
A: 42

Problem: Coming off their season-opening win over the Titans, the Steelers flew to Soldier Field for a Week 2 interconference duel with the Chicago Bears. In the first quarter, Pittsburgh struck first as quarterback Ben Roethlisberger completed a 1-yard touchdown pass to tight end Matt Spaeth. However, in the second quarter, the Bears answered with quarterback Jay Cutler completing a 6-yard touchdown pass to tight end Kellen Davis. Pittsburgh would regain their lead in the third quarter as Roethlisberger got a 2-yard touchdown run, but in the fourth quarter, two missed field goals from kicker Jeff Reed would lead to Cutler's 7-yard touchdown pass to wide receiver Johnny Knox and kicker Robbie Gould's 44-yard field goal.
Answer this question based on the article: How many yards was the touchdown pass between Cutler and Knox?
A:
7