In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.

Question: How many times did Thomas fumble that season? Passage:Early in the second quarter, Steelers receiver Andre Hastings returned a punt 12 yards to the Bills 43-yard line, setting up Norm Johnson's 45-yard field goal. Now facing a 17-0 deficit, the Bills offense self-destructed on their next drive. Facing 3rd and 8, Jim Kelly was sacked by linebacker Kevin Green and fumbled the ball. Center Kent Hull recovered the fumble for Buffalo, but it didn't help much. On the next play, Lee Flowers stormed into the backfield and tackled punter Chris Mohr on the Bills 12-yard line, leading to another Johnson field goal that gave Pittsburgh a 20-0 lead. Buffalo responded with a drive to the Steelers 30-yard line, only to lose the ball when Lake forced a fumble from Thurman Thomas that was recovered by defensive back Chris Oldham. However, the Bills soon got the ball back with excellent field position after Rohn Stark punted the ball 33 yards to the Steelers 49. Kelly then got the team to the 1-yard line with three completions, hitting Tony Cline for 17 yards, Andre Reed for 5, and Steve Tasker for 26. Thomas then ran the ball into the end zone, cutting the score to 20-7. Only 45 seconds remained in the half, but O'Donnell proved up to the challenge of earning his team some more points, completing 4 consecutive passes for 53 yards to get the team to the Bills 16-yard line. Johnson finished the drive with his third field goal, giving the Steelers a 23-7 halftime lead.

Buffalo responded with a drive to the Steelers 30-yard line, only to lose the ball when Lake forced a fumble from Thurman Thomas that was recovered by defensive back Chris Oldham

Question: What age was Ferdinand I the year Viseu fell? Passage:The history of the county of Portugal is traditionally dated from the reconquest of Portus Cale (Porto) by Vímara Peres in 868. He was named a count and given control of the frontier region between the Limia and Douro rivers by Alfonso III of Asturias. South of the Douro, another border county would be formed decades later when what would become the County of Coimbra was conquered from the Moors by Hermenegildo Guterres. This moved the frontier away from the southern bounds of the county of Portugal, but it was still subject to repeated campaigns from the Caliphate of Córdoba. The recapture of Coimbra by Almanzor in 987 again placed the County of Portugal on the southern frontier of the Leonese state for most of the rest of the first county's existence. The regions to its south were only again conquered in the reign of Ferdinand I of León and Castile, with Lamego falling in 1057, Viseu in 1058 and finally Coimbra in 1064.

The regions to its south were only again conquered in the reign of Ferdinand I of León and Castile, with Lamego falling in 1057, Viseu in 1058 and finally Coimbra in 1064

Question: How big is the National Park that the Yellowstone River flows northward through? Passage:The river rises in northwestern Wyoming in the Absaroka Range, on the Continental Divide in southwestern Park County. The river starts where the North Fork and the South Fork of the Yellowstone River converge. The North Fork, the larger of the two forks, flows from Younts Peak. The South Fork flows from the southern slopes of Thorofare Mountain. The Yellowstone River flows northward through Yellowstone National Park, feeding and draining Yellowstone Lake, then dropping over the Upper and Lower Yellowstone Falls at the head of the Grand Canyon of the Yellowstone within the confines of the park. After passing through the Black Canyon of the Yellowstone downstream of the Grand Canyon, the river flows northward into Montana between the northern Absaroka Range and the Gallatin Range in Paradise Valley. The river emerges from the mountains near the town of Livingston, where it turns eastward and northeastward, flowing across the northern Great Plains past the city of Billings.


The Yellowstone River flows northward through Yellowstone National Park, feeding and draining Yellowstone Lake, then dropping over the Upper and Lower Yellowstone Falls at the head of the Grand Canyon of the Yellowstone within the confines of the park