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.

Example Input: Question: Who is the mayor of the town where the KFI studios were located? Passage:Ellsworth moved his family to the Southern California/Los Angeles region settling in the Reseda area in the San Fernando Valley, just north of the KFI, Burbank studios. He worked for KFI radio and then KCBS-FM in 1973. He later worked for KCOP-TV as a newscaster, sportscaster, writer, announcer and talk show host for several years. At KCOP-TV Ellsworth produced, wrote and hosted Daybreak and Who Can I Turn To which were weekly talk shows dealing with financial and medical topics. For 2 years he was the talk show host for KNX-TV's (Los Angeles) Noontime midday show. In 1974 Ellsworth lent his talent to the Toshiko Akiyoshi/Lew Tabackin Big Band album Kogun. His voice is heard on the track Memory as part of a narrative and story telling relating to Japanese folklore. Memory is also included on the 2008 Mosaic 3 CD compilation, .
 Links: a. Southern California b. CBS c. Burbank, California d. Southern California
Example Output: c

Example Input: Question: Which of the teams Boswell played for was the oldest? Passage:Born in Chester, Boswell joined local football club Chester F.C. upon leaving school, initially as an amateur. He remained with the club until the outbreak of the Second World War, but never made it to the club's first team. During the war he served with the Royal Engineers and also made appearances as a guest player for Sheffield Wednesday during unofficial wartime competitions. He was later posted to Barton Stacey in Hampshire, where he helped his unit's football team win a major Army Football Association trophy. Upon leaving the army in 1946 he joined Gillingham, who at the time were playing in the Kent League. Gillingham manager Archie Clark also signed four other players who had served with Boswell at Barton Stacey and played alongside him in the unit football team, namely Jackie Briggs, George Forrester, Hughie Russell and Vic Hole.
 Links: a. Chester City F.C. b. Army Football Association c. Hampshire d. Kent Football League (1894–1959)
Example Output: a

Example Input: Question: Which countries won gold medals at the two bobsleigh tracks constructed in Lake Placid? Passage:Constructed in 1930 for the 1932 Winter Olympics, the track was the first bobsleigh track located outside of Europe. In 1949, it hosted the FIBT World Championships, also the first outside of Europe. The original bobsleigh track was demolished in 1978 to pave the way for an artificial track for the 1980 Winter Olympics with a separate luge track being constructed for those same games. The luge track was the first luge track in North America when it was completed in 1979. In 1983, the luge track was the first venue to host the FIL World Luge Championships outside of Europe. Both tracks were demolished in the late 1990s and a combination track was constructed in early 2000 in time for the only Winter Goodwill Games. The track is a regular venue for World Cup competitions in bobsleigh, luge, and skeleton. In 2009, the track will become the first combination track to host the bobsleigh, luge, and skeleton world championships in a non-Winter Olympic year.
 Links: a. 1932 Winter Olympics b. IBSF World Championships (bobsleigh and skeleton) c. Goodwill Games d. Skeleton World Cup
Example Output:
a