In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.

Ex Input:
Question: How many members strong was the Prague Philharmonia when Walker conducted it in 2005? Passage:In 2000/01 Walker conducted the English Touring Opera's production of the Magic Flute, and on 27 November 2004 the Chelsea Opera Group (UK) in Glinka's A Life for the Tsar at the Queen Elizabeth Hall. In November 2005 he conducted the Prague Philharmonia, and in the winter season 2005/6 Walker conducted three performances of The Nutcracker for the Royal Opera House, Covent Garden, and Swan Lake in 2009 for the Finnish National Ballet. On 4 July 2010 he conducted the BBC Philharmonic Orchestra, and in 2011 a concert with the Royal Philharmonic Orchestra. He appeared at the Oundle International Festival in 2011 where he conducted the premiere of Prophet and Loss by Julian Grant. In October 2011 he conducted a Gershwin Gala with the Russian Philharmonic. In 2012 Walker conducted the English Chamber Orchestra. and a production of the Nutcracker at the Norwegian National Opera and Ballet. On 19 April 2015 he conducted the New Russia State Symphony Orchestra. In 2017 he was awarded the Elgar Medal by the Elgar Society for championing the composer's music internationally in countries including Belarus, Russia, Poland, Turkey and Romania.
 Links: a. Queen Elizabeth Hall b. George Gershwin c. Prague Philharmonia d. Prague Philharmonia

Ex Output:
c


Ex Input:
Question: Who was the head coach for Ajax Youth Academy when Jozefzoon joined? Passage:A Winger and attacking midfielder, Jozefzoon began his career with spells at CTO '70 and AFC. He joined the Ajax Youth Academy in 2006 and signed a three-year professional contract in June 2008. Jozefzoon won his maiden call into the first team squad for the opening match of the 2010–11 Eredivisie season versus FC Groningen and remained an unused substitute during the 2–2 draw. He made his senior debut six days later, replacing Urby Emanuelson at half time during a 4–2 win over SBV Vitesse. He scored his only goal for the club in a 5–0 KNVB Becker third round win over MVV Maastricht on 22 September 2010. After five appearances during the 2010–11 season, Jozefzoon signed a one-year contract extension in June 2011, but spent the 2011–12 season away on loan and was released at the end of the season.
 Links: a. SBV Vitesse b. SBV Vitesse c. Ajax Youth Academy d. Ajax Youth Academy

Ex Output:
c


Ex Input:
Question: Did the B-47 Stratojet exist during World War II? Passage:RAF Mildenhall opened on 16 October 1934. King George V reviewed 350 aircraft there in 1935 on the occasion of his Silver Jubilee. This historical event is commemorated by a memorial tablet located in front of the Building 562, the current 100 ARW headquarters. During World War II, Mildenhall became a bomber station, flying Vickers Wellingtons, Short Stirlings and Avro Lancasters. It was also the headquarters of 3 Group Bomber Command. From 1950, Mildenhall became home to bombers and later tanker aircraft of the United States Air Force. Throughout the 1950s, Strategic Air Command bomber units were deployed on a regular rotational basis from the United States to the United Kingdom. The B-47 Stratojet was a familiar sight in the skies over RAF Mildenhall and RAF Upper Heyford at this time, as entire wings deployed on 90-day rotations. From 1976 to 1990, the SR-71 Blackbird was flown out of Mildenhall by Detachment 4 of the 9th Strategic Reconnaissance Wing of the USAF. RAF Mildenhall was, until 2003, the home of the largest military-sponsored air show in Europe, when it was cancelled because of increasing operational requirements.
 Links: a. Air show b. RAF Bomber Command c. RAF Bomber Command d. World War II

Ex Output:

d