In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.

Ex Input:
Question: Which company manufactured the rifle that the Bundeswehr replaced in 1997? Passage:The Heckler & Koch G36 is a 5.56×45mm assault rifle, designed in the early 1990s by Heckler & Koch in Germany as a replacement for the heavier 7.62mm G3 battle rifle. It was accepted into service with the Bundeswehr in 1997, replacing the G3. The G36 is gas-operated and feeds from a 30-round detachable box magazine or 100-round C-Mag drum magazine. The G36 was made with the extensive use of lightweight, corrosion-resistant synthetic materials in its design; the receiver housing, stock, trigger group (including the fire control selector and firing mechanism parts), magazine well, handguard and carry handle are all made of a carbon fiber-reinforced polyamide. The receiver has an integrated steel barrel trunnion (with locking recesses) and a nylon 66 steel reinforced receiver. The standard German Army versions of the G36 are equipped with unique a ZF 3×4° dual optical sight that combines a 3× magnified telescopic sight and an unmagnified reflex sight mounted on top of the telescopic sight. Widely distributed, it has been adopted by over 40 countries and prompted other nations to develop similar composite designs, such as the FX-05 Xiuhcoatl.


Ex Output:
b


Ex Input:
Question: How long was the fortification that the German Army retreated to? Passage:Adair fought in the First World War. He joined the British Army, receiving his commission as a probationary second lieutenant on 2 May 1916 in the 5th (Reserve) Battalion of the Grenadier Guards. From January 1917 onwards he served in the trenches of the Western Front in France and Belgium as part of the 2nd Company, 3rd Battalion, Grenadier Guards, with the rank of lieutenant. The battalion was part of the 2nd Guards Brigade of the Guards Division. Adair's first major battle was in the pursuit of the retreating German Army to the Hindenburg Line. The division then took part in the Battle of Passchendaele. Adair, however, took no part in the battle, due to an injury sustained in a bicycle accident in early July 1917. He returned to the battalion in January 1918.


Ex Output:
b


Ex Input:
Question: How old was Sir Thomas Arundell when he purchased Wardour Castle? Passage:After the fall of the Lovell family following their support of the Lancastrian cause during the Wars of the Roses, the castle was confiscated in 1461 and passed through several owners until bought by Sir Thomas Arundell of Lanherne in 1544. The Arundells were an ancient and prominent Cornish family, the principal branches of which were seated at the manors of Lanherne, Trerice, Tolverne and Menadarva in Cornwall. The family held several estates in Wiltshire. The castle was confiscated when Sir Thomas — a staunch Roman Catholic — was executed for treason in 1552, but in 1570 was bought back by his son, Sir Matthew Arundell, later a Sheriff and Custos Rotulorum of Dorset. The Arundells, led by Thomas Arundell, 1st Baron Arundell of Wardour, subsequently became known as some of the most active of the Catholic landowners in England at the time of the Reformation; thus they were naturally Royalists in the English Civil War. During that conflict, Thomas Arundell, 2nd Baron Arundell of Wardour, was away from home on the King's business and had asked his wife, Lady Blanche Arundell, aged 61, to defend the castle with a garrison of 25 trained fighting men. On 2 May 1643 Sir Edward Hungerford, with 1,300 men of the Parliamentarian Army, demanded admittance to search for Royalists. He was refused and laid siege, setting about the walls with guns and mines. After five days the castle was threatened with complete destruction. Lady Arundell agreed to surrender, and the castle was placed under the command of Colonel Edmund Ludlow. Lord Arundell had died of his wounds after the Battle of Stratton, and his son, Henry 3rd Lord Arundell, next laid siege to his own castle, blew up much of it and obliged the Parliamentary garrison to surrender in March 1644.


Ex Output:

b