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: What was the age of Raul Boesel the year that Serra qualified for the 1982 Canadian Grand Prix? Passage:Francisco "Chico" Serra (born 3 February 1957 in São Paulo) is a racing driver from Brazil. He won the 1979 British Formula 3 Championship. He participated in 33 Formula One World Championship Grands Prix for Fittipaldi and Arrows, debuting on 15 March 1981. He made 18 starts, not qualifying for the remaining fifteen races, although he ought to have started as the reserve in the 1982 Swiss Grand Prix. However, Ferrari withdrew Patrick Tambay's entry so late that Serra was not allowed to take part. Serra scored one championship point, for finishing sixth in the 1982 Belgian Grand Prix. After qualifying for the 1982 Canadian Grand Prix, Serra and countryman Raul Boesel had a short scuffle. Serra was furious at Boesel for blocking his last flying lap after waving Keke Rosberg by. Boesel denied that this was intentional. Serra made one CART Champ Car start in 1985 at the Portland International Raceway for Ensign Racing but suffered an engine failure.
 Links: a. Arrows Grand Prix International b. Ensign Racing c. Scuderia Ferrari d. Raul Boesel

Output: d


Input: Consider Input: Question: How old was Svetlana Matveeva when she beat Zapata in 2006? Passage:In 1999, in Santiago won the Pan American Girl's Chess Championship in the age group U20, and in 2000 in Bento Gonçalves won the Pan American Girl's Chess Championship in the age group U18. In 2002, in La Paz she was the second in the Pan American Girl's Chess Championship in the age group U20. In August 2005, she was second in the Pan American Women's Chess Championship, only in a tie-break after losing to Argentinean chess player Claudia Amura. She won four times in the Peruvian Women's Chess Championships: 2000, 2002, 2003 and 2004. In October 2005, after winning the FIDE South America zone tournament, she qualified for the Women's World Chess Championship. In 2006, in Yekaterinburg she participated in the Women's World Chess Championship, where won Kateryna Lagno in the first round, but in the second round lost Svetlana Matveeva. After repeated won the FIDE South America zone tournament in 2007 in Trujillo, where she surpassed her compatriot Deysi Cori, was selected at Women's World Chess Championship in Nalchik, but refused to participate, and her rival in the first round Antoaneta Stefanova went to the second round without a fight. Played for Peru at three Women's Chess Olympiads (2002—2006). In 1999, she was awarded the FIDE International Women International Master (WIM) title.
 Links: a. Kateryna Lagno b. Claudia Amura c. Svetlana Matveeva d. Svetlana Matveeva

Output: c


Input: Consider Input: Question: How old was Page when he signed a new two-year contract? Passage:Five youth team players were given professional contracts for the 2015–16 season: defender Lewis Bergin, midfielders Chekaine Steele, Billy Reeves and Omar Haughton, and striker Jonathon Kapend. Manager Rob Page signed a new two-year contract in May 2015. However he needed to avoid a poor start to the season as chairman Norman Smurthwaite warned he was prepared to make "ruthless decisions" if the club were struggling by September. The first signings of the season were powerful former loanee defender Remie Streete from Newcastle United, and former Norwich City youth player Sam Kelly. Midfielder Sam Foley also joined the "Valiants" on a two-year contract, choosing to leave relegated Yeovil Town just after picking up Yeovil's Player of the Year award. Page further strengthened the defence and midfield by signing Walsall right-back Ben Purkiss and Crewe Alexandra defensive midfielder Anthony Grant. Page needed to find a cost effective forward with the club both short on strikers following the departure of Tom Pope and Ben Williamson and with little funds available due to a large cut to the wage bill, and so brought in young Watford striker Uche Ikpeazu on loan, having been impressed by Ikpeazu's performances for Crewe last season. Another former Crewe favourite, A-Jay Leitch-Smith, was also signed after impressing Page during pre-season. The eighth and final summer signing was Ryan Inniss, who was confirmed as joining on a season long loan from Crystal Palace after being linked with a return to Vale Park for many weeks. On 6 August, Vale signed goalkeeper Jak Alnwick on a short-term deal; he was signed to compete with Sam Johnson for a first team place as Chris Neal was out injured at the start of the season.
 Links: a. Watford F.C. b. Yeovil Town F.C. c. Rob Page d. Crewe Alexandra F.C.


Output: c