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.

Input: Consider Input: Question: How long had The Observer been operating as a going concern the year Harrisson started working there as a radio critic? Passage:During the Second World War Harrisson continued directing Mass-Observation and was radio critic for The Observer from May 1942 until June 1944. For much of this time he was in the army and gave up reviewing on leaving the UK. After service in the ranks he was commissioned as a second lieutenant in the Reconnaissance Corps on 21 November 1943. He had been recruited (some sources say by a confusion of names, despite his apparent suitability) for a plan to use the native peoples of Borneo against the Japanese. He was attached to Z Special Unit (also known as Z Force), part of the Services Reconnaissance Department (SRD: a branch of the combined Allied Intelligence Bureau in the South West Pacific theatre). On 25 March 1945, he was parachuted with seven Z Force operatives from a Consolidated Liberator onto a high plateau occupied by the Kelabit people. An autobiographical account of this operation (SEMUT I, one of four SEMUT operations in the area) is given in World Within (Cresset Press, 1959); there are also reports – not always flattering – from some of his comrades. His efforts to rescue stranded American airmen shot down over Borneo are a central part of "The Airmen and the Headhunters", an episode of the PBS television series Secrets of the Dead. The recommendation for his Distinguished Service Order which was gazetted on 6 March 1947 (and dated 2 November 1946) describes how from his insertion until 15 August 1945 the forces under his command protected the flank of Allied advances, and caused severe disruption to Japanese operations.
 Links: a. Z Special Unit b. The Observer c. Kelabit people d. Second lieutenant

Output: b


Input: Consider Input: Question: How many Grammy awards did the singer who re-recorded the song written by Sam Dees win? Passage:In 1983, The Manhattans released the album Forever by Your Side, by Columbia Records, which brought the two singles the group that year. The first was the song "Crazy", the great success of this album, peaked at number 4 on the R&B chart. The second single was the title track "Forever by Your Side", which had moderate success in the United States, peaked at number 30 on the R&B chart, but has become a great success and a romantic classic in Brazil two years later, when it was included as part of the soundtrack of a soap opera in the country in 1985. The success led to a Portuguese version the following year, called "Pra Sempre Vou Te Amar", which also was successful in Brazil, and has been recorded by several Brazilian artists. Another highlight of this album Forever by Your Side was the song "Just The Lonely Talking Again", written by the American singer and songwriter Sam Dees, which was originally recorded by The Manhattans this 1983 album and was later re-recorded by Whitney Houston on her second studio album "Whitney" in 1987.
 Links: a. Soap opera b. Whitney (album) c. Brazil d. Whitney Houston

Output: d


Input: Consider Input: Question: How old was the 2012 Skate America Silver Medalist when she won that award? Passage:Mitchell currently works as a coach with former Swedish national champion Peter Johansson at the Skating Club of Boston. Their students include 2012 Skate America Silver Medalist Christina Gao, 2007 World Junior champion Stephen Carriere, 2008 Eastern Sectional champion Katrina Hacker, 2007 US National junior pewter medalist Curran Oi, 2007 Eastern Sectional champion Kylie Gleason, two time Junior Grand Prix gold medalist Juliana Cannarozzo, 2008 US National junior bronze medalist Brittney Rizo, 2007 Canadian Junior Champion Dana Zhalko-Tytarenko, and 2009 US National Junior Champion Ross Miner. They formerly coached 2003 U.S. pewter medalist Scott Smith, 2007 US National silver medalist Emily Hughes, 2004 US National Junior silver medalist Jason Wong, 2003 US National Novice bronze medalist Jessica Houston, and 2003 US National Junior Champion Erica Archambault.
 Links: a. Emily Hughes b. Christina Gao c. Scott Smith (figure skater) d. Curran Oi


Output: b