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: How long did the battle where George was appointed colonel for last? Passage:Randall enlisted as a private in the 4th Pennsylvania Volunteer Infantry in the April 1861. He then accepted appointment to the 4th U.S. Infantry as second lieutenant in October. He served in New York and Washington, D.C., and in the field with the Army of the Potomac. He was a second lieutenant at the Siege of Yorktown, Battle of Gaines' Mill, Battle of Malvern Hill, Second Bull Run (where he commanded Company C), and Fredericksburg; and a first lieutenant at the Battle of the Wilderness. He was appointed a brevet captain for gallant service in the Battle of Antietam. He served as a major in the 14th New York Heavy Artillery Regiment, part of Major General Ambrose Burnside's IX Corps on the Richmond-Petersburg Front in 1864, and was commander of the regiment at the Battle of the Crater. The Dansville Advertiser reported on 7 September that he assumed command of the regiment on 18 August. This article also reports that he was wounded in the battle on 19 August. He was appointed a brevet lieutenant colonel, and then colonel for gallantry in the Battle of Fort Stedman. He mustered out of the Volunteer service on 26 August, and was appointed captain in the 4th US Infantry on 23 September 1865. Subsequently, he served at Davids' Island Military Reservation, New York Harbor, where he was in December 1867.


Ex Output:
b


Ex Input:
Question: How many games were won in the 2009 CECAFA Cup by the team that Eritrea beat 3-1? Passage:Eritrea returned to the 2009 CECAFA Cup in Nairobi. A young squad was assembled with just 12 days' training. In Group B, they gained a surprise draw with Zimbabwe, lost narrowly to Rwanda, and beat Somalia 3–1. They were easily beaten 4–0 in the quarter-finals by Tanzania. Twelve squad members failed to report for the return flight, and sought the assistance of the Refugee Consortium of Kenya. They were believed to be in hiding in Eastleigh, an eastern suburb of Nairobi home to many immigrants. Nicholas Musonye, the secretary-general of CECAFA, feared that the government might react by refusing to let the team travel abroad in future. The twelve players were later granted interim asylum by the United Nations High Commissioner for Refugees in Kenya. Eleven of these players have since travelled to Adelaide in Australia with two of them, Samuel Ghebrehiwet and Ambes Sium, signing for Gold Coast United in the A-League in August 2011.


Ex Output:
a


Ex Input:
Question: Has He Zhuoyan's co-star in Royal Tramp had any children? Passage:She was educated at the Hangzhou Arts School. She started her career by participating in the Hangzhou Super Girl singing contest in 2005, winning the sixth position among the top ten finalists. The following year, she participated in the Chinese Yahoo Three Directors Star Search programme () and emerged as champion of the Zhang Jizhong category. She signed on with the talent agency Huayi Brothers and started acting in period and wuxia-themed television series produced by Zhang Jizhong. She is best known for her role as one of Wei Xiaobao's seven wives, Shuang'er, in Royal Tramp, a 2008 television series based on Louis Cha's novel The Deer and the Cauldron. She has also attained recognition for her role as Wang Yanyu in Paladins in Troubled Times, an adaptation of Liang Yusheng's novel Datang Youxia Zhuan, and as Moli in Bing Sheng, a television series featuring a fictionalised life story of the ancient Chinese militarist Sun Tzu. She has also served as a spokeswoman and endorser for cosmetic and shampoo product brands, as well as appearing in the Chinese Yahoo television commercial Qianshi Jinsheng Pian () together with Huang Xiaoming, her co-star in Royal Tramp.


Ex Output:

b


