In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

Ex Input:
In a duel-input USB cable, what are both cables used for?, Context: Some USB devices require more power than is permitted by the specifications for a single port. This is common for external hard and optical disc drives, and generally for devices with motors or lamps. Such devices can use an external power supply, which is allowed by the standard, or use a dual-input USB cable, one input of which is used for power and data transfer, the other solely for power, which makes the device a non-standard USB device. Some USB ports and external hubs can, in practice, supply more power to USB devices than required by the specification but a standard-compliant device may not depend on this.

Ex Output:
power


Ex Input:
Which player fumbled the ball?, Context: There would be no more scoring in the third quarter, but early in the fourth, the Broncos drove to the Panthers 41-yard line. On the next play, Ealy knocked the ball out of Manning's hand as he was winding up for a pass, and then recovered it for Carolina on the 50-yard line. A 16-yard reception by Devin Funchess and a 12-yard run by Stewart then set up Gano's 39-yard field goal, cutting the Panthers deficit to one score at 16–10. The next three drives of the game would end in punts.

Ex Output:
Manning


Ex Input:
Did the Ottomans cross the Danube at Silistra first or at Vidin first?, Context: Following the Ottoman ultimatum in September 1853, forces under the Ottoman general Omar Pasha crossed the Danube at Vidin and captured Calafat in October 1853. Simultaneously, in the east, the Ottomans crossed the Danube at Silistra and attacked the Russians at Oltenița. The resulting Battle of Oltenița was the first engagement following the declaration of war. The Russians counterattacked, but were beaten back. On 31 December 1853, the Ottoman forces at Calafat moved against the Russian force at Chetatea or Cetate, a small village nine miles north of Calafat, and engaged them on 6 January 1854. The battle began when the Russians made a move to recapture Calafat. Most of the heavy fighting, however, took place in and around Chetatea until the Russians were driven out of the village. Despite the setback at Chetatea, on 28 January 1854, Russian forces laid siege to Calafat. The siege would continue until May 1854 when the Russians lifted the siege. The Ottomans would also later beat the Russians in battle at Caracal.:130–43

Ex Output:
Following