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: How long had St Mary's Church been standing the year Hans Olufsson died? Passage:The Paus family (earlier spellings include Pauss and de Paus) () is a Norwegian family that first appeared as members of the elite of 16th-century Oslo. Two brothers from Oslo who both became priests, Hans (1587–1648) and Peder Povelsson Paus (1590–1653), have long been known as the family's earliest certain ancestors. In his book Slekten Paus ("The Paus family"), genealogist S.H. Finne-Grønn traced the family two further generations back, to Hans Olufsson (died 1570), a member of the royal clergy in Norway before and after the Reformation, who served as a canon at the royal chapel in Oslo, St Mary's Church, the seat of government of Norway at the time, and who belonged to the high nobility by virtue of his high ecclesiastical and governmental office. The name Paus is known in Oslo since the 14th century, notably as the name of the Lawspeaker of Oslo Nikolas Paus (mentioned 1329–1347) and as the name of one of medieval Oslo's "city farms" (mentioned 1324–1482) that was probably named after the lawspeaker or his family; while a relation between the older and the younger family of the name in Oslo is plausible, it has not been established. Regardless, the modern Paus family is likely the only surviving family to hail from the medieval city of Oslo which burned down in 1624 without being rebuilt, making it the family with the longest documented history in the Norwegian capital.

Example Output: a

Example Input: Question: Who was the last leader of the the country that was established after the year-long siege in 831? Passage:At the time of his accession, Theophilos was obliged to wage wars against the Arabs on two fronts. Sicily was once again invaded by the Arabs, who took Palermo after a year-long siege in 831, established the Emirate of Sicily, and gradually continued to expand across the island. The defence after the invasion of Anatolia by the Abbasid Caliph Al-Ma'mun in 830 was led by the Emperor himself, but the Byzantines were defeated and lost several fortresses. In 831 Theophilos retaliated by leading a large army into Cilicia and capturing Tarsus. The Emperor returned to Constantinople in triumph, but in the autumn he was defeated in Cappadocia. Another defeat in the same province in 833 forced Theophilos to sue for peace (Theophilos offered 100,000 gold dinars and the return of 7,000 prisoners), which he obtained the next year, after the death of Al-Ma'mun.

Example Output: b

Example Input: Question: Which member of Miike Snow is the lead singer? Passage:"Black & Blue" was written by Miike Snow's three members, Christian Karlsson, Pontus Winnberg and Andrew Wyatt, in collaboration with Henrik Jonback and Juliet Richardson. Parts of the chorus were initially conceptualized by Karlsson and Winnberg, also known as Bloodshy & Avant, prior to forming the band in 2007. Karlsson told music website musicOMH, "It's the only song on the album that we had an idea before and we kind of saved [it], like we want this song for our own project. When we met Andrew [Wyatt] and we decided to start the band, it was only an idea, but we played it for Andrew and he really liked it." It was recorded at Robotberget, the band's own studio in Stockholm, Sweden. The band produced the track and then mixed it with Anders Hvenare. Columbia Records released "Black & Blue" as the album's second single on 15 October 2009 in Europe. The digital release includes the original version and remixes by Caspa, Jaymo & Andy George, Netsky, Savage Skulls and Tiga. In the United Kingdom, the iTunes Store version comes with the original track, remixes by Tiga and Caspa, and Mark Ronson's remix of the album's first single, "Animal". A 12" vinyl was released in the United Kingdom on 19 October 2009, featuring the aforementioned "Black & Blue" remixes, excluding Netsky's.

Example Output:
b