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.

Input: Consider Input: Question: How many cast members did Line of Duty when it premiered on BBC2? Passage:Mercurio's next original drama series, Line of Duty (first broadcast 26 June 2012), premiered as BBC2's then best-performing drama series in 10 years with 4.1 million viewers. A well-received second series (first broadcast 12 February 2014) resulted in the BBC commissioning two further series for production in 2015 and 2016. The first series was nominated for a Royal Television Society Award for Best Drama Series and earned Mercurio his third nominations as Best Drama Writer by the Royal Television Society and The Writers' Guild of Great Britain. In 2014, Line of Duty was named in the Top 50 BBC2 Shows of All-Time, and named best television drama of the year by The Observer, and in 2016 ranked among the best BBC shows of all time and among the best police series of all time. In 2015, the second series won the Royal Television Society Award for Best Drama Series. and was nominated for four BAFTA Awards. Series 3 of Line of Duty became the most watched drama series broadcast on BBC2 in the multichannel era. Series 4 transferred to BBC One, consisting of six episodes broadcast from 26 March 2017.


Output: a


Input: Consider Input: Question: Did the Earl of Kintore have any children when Anstruther-Gray became his Aide-de-Camp? Passage:He joined the Militia's Fife Artillery as a Sub-Lieutenant (Supernumerary) on 16 December 1876. He served for four years until he joined the 13th Hussars as a second lieutenant in 1880, served in India and Afghanistan in 1880-1881 and was promoted to lieutenant on 1 July 1881, before transferring to the Royal Horse Guards in 1885. He was Aide-de-Camp to the Earl of Kintore, Governor of South Australia, from 1889-1891, was promoted to captain on 30 December 1893, and to major on 1 May 1897. He served in South Africa from 1901-1902 where he was commandant of the district of Knysna in 1901, and Inspector of Concentration Camps in Transvaal in 1902. Following the end of the war in June 1902, he returned to the United Kingdom in the SS Dunottar Castle, which arrived at Southampton in July 1902. He later commanded 3rd Line Group, Scottish Horse during World War I.


Output: b


Input: Consider Input: Question: Which company was the first to produce a double-acting electric motor? Passage:German Type IXC submarines were slightly larger than the original Type IXBs. U-131 had a displacement of when at the surface and while submerged. The U-boat had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines producing a total of for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to .



Output: a