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 engines does the Boeing bomber that land at Taichung International Airport have? Passage:Taichung International Airport was constructed during the era of Japanese rule and was named . The United States Air Force (USAF) had been garrisoning the base with two fighter squadrons until the Sino-American Mutual Defense Treaty came into force on March 3, 1955. The airport then expanded in 1954 according to the Sino-American Mutual Defense Treaty, and later renamed Ching Chuan Kang Air Base (CCK) in memory of General Qiu Qingquan. In 1966 the American Air Force established a joint forces air-base at CCK. It was the largest air force base in the Far East at the time, allowing Boeing B-52 Stratofortress bombers to land. During the Vietnam War, CCK became a depot for the USAF. The US Military used CCK and Shuinan Airport to run many of its long-distance Vietnam, Cambodia and Laotian bombing, scouting and cargo transport runs during the Vietnam War era. This base was shut down and most American facilities were removed after U.S. established diplomatic relations with the China in 1979.


Output: b


Input: Consider Input: Question: Which of the writers of the single "Little Bit of Everything" was older? Passage:The album's lead single "Little Bit of Everything", written by Brad and Brett Warren (both of The Warren Brothers) along with Kevin Rudolf, was released on 14 May 2013. This song reached number one on the US Billboard Country Airplay chart in September 2013, as did "We Were Us", which was released as the album's second international single. in September 2013. "Shame" was released as the second single in Australia and New Zealand only in August 2013. The third international single, "Cop Car" was released in January 2014. The fourth international single, "Somewhere in My Car", was released on 23 June 2014. That song also reached number one on the Country Airplay chart late that year. The fifth international single, "Raise 'Em Up" is duet with Eric Church. it was released on 26 January 2015, and became the fourth (of the five North American releases) to top the Country Airplay chart in May 2015.


Output: a


Input: Consider Input: Question: How many nations fought in the war that killed Bathurst's father in 1942? Passage:His father having been killed in 1942 while on active duty during World War II, Bathurst succeeded to the family titles on the death of his grandfather, the 7th Earl Bathurst, in 1943. He joined the military in 1948, when he was appointed a Governor of the Royal Agricultural College. Lord Bathurst was commissioned, served in the 10th Royal Hussars and later the Royal Gloucestershire Hussars, and promoted Captain in the Territorials to the local cavalry regiment, the Royal Gloucestershire Hussars. While working on his estate he was made Joint MFH of the Vale of White Horse hunt. He later held political office under Harold Macmillan as a Lord-in-Waiting (government whip in the House of Lords) from 1957 to 1961. The Conservative government recommended him as a Deputy Lieutenant of the county in 1960. Briefly he was promoted a junior minister as Joint Under-Secretary of State for the Home Department from 1961 to 1962. He was a Deputy Lieutenant for Gloucestershire from 1960 to 1986, following which he left politics to run the family estate based around Cirencester Park.



Output: b