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 US Air Force plane that was shot down in Yugoslavia is the fastest? Passage:An important portion of the 1999 war between Yugoslavia and the NATO coalition involved combat between the Yugoslav Air Force, which was the predecessor of today's Serbian Air Force, and the opposing air forces of NATO. United States Air Force F-15s and F-16s flying mainly from Italian air force bases attacked the defending Yugoslav fighters—usually MiG-29s, which were in bad shape, due to lack of spare parts and maintenance. A total of six Yugoslav MiG-29s were shot down in 1999, of which three were shot down by USAF F-15s, one by a USAF F-16, and one by a RNAF F-16. One aircraft, according to a Serbian documentary, was hit by friendly fire from the ground. Another four were destroyed on the ground. During the course of the air war, Yugoslav anti-aircraft defenses downed a USAF F-16C and an F-117 Nighthawk, the first stealth aircraft to ever be shot down in combat.


Ex Output:
b


Ex Input:
Question: Which cup competition that Krul played in has a longer history? Passage:Krul returned to Newcastle as backup to first choice Steve Harper. He made his senior league debut on 8 August 2009 in the opening Football League Championship game of the season away to West Bromwich Albion, coming on as a half time substitute for the injured Harper. Following this match, The Guardian called him "an excellent reserve goalkeeper". He later played the full Football League Cup match against Huddersfield Town on 26 August 2009, which Newcastle won 4–3. Krul also started the 2–0 League Cup defeat to Peterborough. Against Swansea City on 28 November, he again came on to replace the injured Steve Harper. On 2 January, he played in the FA Cup Third Round tie against Plymouth Argyle, the game ending 0–0. He then played in the replay at St James' Park on 13 January, a 3–0 victory. Krul started his first league game for Newcastle on 2 May 2010, the last day of the Championship campaign, against Queens Park Rangers at Loftus Road and kept a clean sheet. In July 2010, Krul signed a new four-year contract with Newcastle.


Ex Output:
b


Ex Input:
Question: What is the name of the fourth Marquess of Donegall? Passage:His grandson, the third Marquess, served as Captain of the Yeomen of the Guard under Lord John Russell between 1848 and 1852. In 1841, three years before he succeeded his father in the marquessate, he was created Baron Ennishowen and Carrickfergus, of Ennishowen in the County of Donegal and of Carrickfergus in the County of Antrim, in the Peerage of the United Kingdom. Both his sons predeceased him and on his death in 1883 the barony of 1841 became extinct. He was succeeded in his other titles by his younger brother, the fourth Marquess. On the death of his grandson, the sixth Marquess, in 1975, the line of the second Marquess failed. The sixth Marquess was succeeded by his kinsman, the fifth Baron Templemore (see below), who became the seventh Marquess. From 1975 until 1999, when most hereditary seats were abolished with the passage of the House of Lords Act 1999, the Marquess sat in the House of Lords as Baron Fisherwick in the Peerage of Great Britain. , the titles are held by the latter's son, the eighth Marquess, who succeeded in 2007.


Ex Output:

a