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 year did the newspaper who called Krul an excellent reserve goalkeeper first found? Passage:Krul returned to Newcastle as backup to first choice Steve Harper. He made his senior league debut on 8 August 2009 in the opening Football League Championship game of the season away to West Bromwich Albion, coming on as a half time substitute for the injured Harper. Following this match, The Guardian called him "an excellent reserve goalkeeper". He later played the full Football League Cup match against Huddersfield Town on 26 August 2009, which Newcastle won 43. Krul also started the 20 League Cup defeat to Peterborough. Against Swansea City on 28 November, he again came on to replace the injured Steve Harper. On 2 January, he played in the FA Cup Third Round tie against Plymouth Argyle, the game ending 00. He then played in the replay at St James' Park on 13 January, a 30 victory. Krul started his first league game for Newcastle on 2 May 2010, the last day of the Championship campaign, against Queens Park Rangers at Loftus Road and kept a clean sheet. In July 2010, Krul signed a new four-year contract with Newcastle.
Links: a. St James' Park b. Steve Harper c. The Guardian d. EFL Championship
Example Output: c

Example Input: Question: When did the invasion start of the destination Task Force 38 was going to? Passage:Flint reported to the 3rd Fleet for duty at Ulithi on 27 December 1944, and six days later, sailed with Task Force 38 (TF 38) for a month-long cruise in support of the invasion of Luzon. She screened aircraft carriers as they launched strikes on Luzon, Taiwan, and the China coast, and fired protective anti-aircraft cover during a Japanese kamikaze attack on 21 January 1945. Replenishing at Ulithi from 26 January to 10 February, Flint then sailed with newly designated TF 38 for air strikes on Tokyo preceding the attack on Iwo Jima. Her force arrived off Iwo Jima on 21 February to provide anti-aircraft cover for the Marines who had landed two days previously, and Flint returned to Ulithi 12 March for a brief 2 days of replenishment.
Links: a. Luzon b. United States Third Fleet c. Kamikaze d. China
Example Output: a

Example Input: Question: Who was the Labour Party leader when Reg Keys opposed Tony Blair in a general election? Passage:Reg Keys was an ambulance paramedic for 19 years in Solihull before retiring to Llanuwchllyn, Bala in North Wales. In the 2005 UK general election, he stood against the then Prime Minister, Tony Blair, in the Sedgefield constituency. Keys declared at the outset of the campaign that he had been a Labour Party voter and was still basically socialist, but that he was seeking election as a candidate opposed to Blair's policy on the Iraq War. He claimed that by electing him, voters could keep the Labour Party in power but with Gordon Brown as the likely Prime Minister rather than Blair. Former Independent MP Martin Bell urged the other parties to withdraw their candidates as removing a supporter of the war from office would send a message to President Bush and other World Leaders who had supported him. During the campaign, UK newspaper The Guardian's Stuart Jeffries asked Keys, "Is it difficult to be a political candidate in these circumstances, when you are still clearly grieving?", to which he replied "Yes it is. [] I feel, though, that I have a responsibility to Tom. I keep going back to the words of a widow of a man who died on the Kursk []. She said: 'If you betray your country you are a traitor and you will go to prison. But if your country betrays you, what can you do?' I think I have an answer to that: we can use our vote to get rid of those people who betrayed my son and other men like him. That's what I want the people of Sedgefield to do."
Links: a. Iraq War b. 2005 United Kingdom general election c. Solihull d. Labour Party (UK)
Example Output:
d