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: What team won the title in Wotherspoon's debut season? Passage:A native of Surrey, British Columbia, Wotherspoon was selected by the Portland Winter Hawks in the second round of the 2008 Western Hockey League (WHL) Bantam Draft. He made his WHL debut as a 15-year-old in 200809, appearing in four games for Portland, then played four full seasons between 2009 and 2013. In his WHL career, he has appeared in 239 games in his WHL career and scored 17 goals along with 65 assists. With the Winterhawks, he appeared in the WHL championship series in three consecutive years as Portland lost the final in 2011 and 2012 to the Kootenay Ice and Edmonton Oil Kings, respectively, before finally winning the Ed Chynoweth Cup championship in 2013 by defeating Edmonton. Wotherspoon was also named to the WHL's Western Conference second All-Star Team in 201213. Wotherspoon scored three points in five games at the 2013 Memorial Cup, however Portland lost the Canadian Hockey League (CHL) championship game, the Memorial Cup, to the Halifax Mooseheads, 64. During the season, Wotherspoon was also a member of the Canadian junior team, recording two points in six games at the 2013 World Junior Ice Hockey Championships.
Links: a. Canadian Hockey League b. 200809 WHL season c. Portland Winterhawks d. Edmonton Oil Kings
Example Output: b

Example Input: Question: Of the characters who married in 1986, which of their actors was younger? Passage:Linda was introduced as the wife of Mick Carter, played by Danny Dyer, the brother of established character Shirley Carter (Linda Henry), who has appeared in EastEnders since 2006. Luisa Bradshaw-White joined the cast as Shirley's sister Tina Carter in early November, and Linda was the second new Carter to appear after her. Kellie Bright's casting was announced alongside Danny Dyer's on 1 October 2013, a week after Bradshaw-White's casting was revealed. Linda was described as having been with Mick since they were teenagers, and despite not being 'blessed with brains', is a 'tough woman who will always fight tooth and nail for her family - especially her children'. Bright previously appeared as a bridesmaid in 1986 at the wedding of Michelle Fowler (Susan Tully) and Lofty Holloway (Tom Watt), and starred in scenes opposite her current co-star Letitia Dean, who continues to appear as Sharon Watts. Bright estimated herself to be aged 10 at the time. She also auditioned for the role of Tanya Branning in 2006, a role that was eventually given to Jo Joyner.
Links: a. Sharon Watts b. Susan Tully c. Danny Dyer d. Tina Carter
Example Output: b

Example Input: Question: Did the British Army win the battle that Adair didn't take part in after the German Army retreated to the Hindenburg Line? Passage:Adair fought in the First World War. He joined the British Army, receiving his commission as a probationary second lieutenant on 2 May 1916 in the 5th (Reserve) Battalion of the Grenadier Guards. From January 1917 onwards he served in the trenches of the Western Front in France and Belgium as part of the 2nd Company, 3rd Battalion, Grenadier Guards, with the rank of lieutenant. The battalion was part of the 2nd Guards Brigade of the Guards Division. Adair's first major battle was in the pursuit of the retreating German Army to the Hindenburg Line. The division then took part in the Battle of Passchendaele. Adair, however, took no part in the battle, due to an injury sustained in a bicycle accident in early July 1917. He returned to the battalion in January 1918.
Links: a. German Army (German Empire) b. Guards Division (United Kingdom) c. Battle of Passchendaele d. World War I
Example Output:
c