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.

Example Input: Question: Which country did Innocent Oula return to after Somalia? Passage:Innocent Oula joined the National Resistance Army in 1986 at the rank of captain. He rose through the ranks and has served as a member of UPDF delegation during the ill-fated Juba Peace Talks, at the rank of lieutenant colonel. At the level of colonel, in 2009, he served at the director of training for the UPDF 2nd Division, based at Mbarara, in Western Uganda. From 2010 until 2011, he served as the Chief of Staff of AMISOM, based in Mogadishu, Somalia. On his return from Somalia, he was posted to the 4th UPDF Division headquarters in Gulu, as the commanding officer. He later was appointed chief of personnel and administration in the UPDF, based at the Mbuya Barracks. In January 2014, he was elected to the Parliament of Uganda, as a UPDF representative. In November 2014, he was promoted to the rank of brigadier, along with more than 1,300 UPDF officers who received promotions at the same time.

Example Output: b

Example Input: Question: How many years apart in age were Sweyn's sons? Passage:Gorm's son, Harald Bluetooth succeeded his father as king and married possibly three times with Gunhild, Tove and Gyrid. Harald had a son named Sweyn Forkbeard. Sweyn succeeded his father as king and married Gunhild (Świętosława of Poland). They had a son named Cnut the Great. Sweyn also ruled England in his lifetime and established the Danish Empire. When Sweyn died, his elder son Harald Svendsen became the King of Denmark, while England's former king, Ethelred, reclaimed the throne. Following Harald's death, his brother Cnut the Great became king, re-established the Danish North Sea Empire. He married Emma of Normandy with whom he had a son named Harthacnut. When Cnut died (and after the brothers of Harthacnut also had died), Harthacnut became king of Denmark and England. Upon his death, Edward the Confessor became ruler of England in 1042. Sweyn Forkbeard also had a daughter, Estrid, from whom all ruling kings and queens of Denmark after 1047 descend.

Example Output: b

Example Input: Question: In what country is Rynek Glowny located in? Passage:Medieval Kraków was surrounded by a 1.9 mile (3 km) defensive wall complete with 46 towers and seven main entrances leading through them. The fortifications around the Old Town were erected over the course of two centuries. The current architectural plan of Stare Miasto—the 13th-century merchants' town—was drawn up following the Tatar invasions of 1259 and 1287. It features the centrally located Rynek Główny, or Main Square, the largest medieval town square of any European city. There is a number of historic landmarks in its vicinity, such as St. Mary's Basilica (Kościół Mariacki), Church of St. Wojciech (St. Adalbert's), Church of St. Barbara, as well as other national treasures. At the center of the plaza, surrounded by kamienice (row houses) and noble residences, stands the Renaissance cloth hall Sukiennice (currently housing gift shops, restaurants and merchant stalls) with the National Gallery of Art upstairs. It is flanked by the Town Hall Tower (Wieża ratuszowa).

Example Output:
b