Given the task definition, example input & output, solve the new input case.
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: Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin? Passage: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Loduring July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
. Links: a. Allies of World War II b. Wesel c. Operation Market Garden d. Air Support.
Output: c
The passage describes the 704th's actions during Operation Market Garden.

New input case for you: Question: How old was Haughton when the Irish War of Independence began? Passage:Benjamin Haughton (18551932) was an Irish businessman from Cork city, who was an independent member of Seanad Eireann from 1922 to 1928. He was from the Cork branch of a Quaker family whose Carlow branch included social reformer James Haughton and scientist Samuel Haughton. Benjamin was head of Haughton's timber and iron merchants in Cork and a supporter of the local YMCA. During the Irish War of Independence he was involved with the Irish White Cross and among a group of liberal Southern unionists who sought conciliation with Sinn Fein in Cork in the lead-up to the 1921 truce. Upon the coming into force of the Constitution of the Irish Free State in 1922, W. T. Cosgrave as the President of the Executive Council nominated 30 of the initial 60 senators, including Haughton. These were subsequently divided by lottery into two cohorts of 15, serving terms of six and twelve years respectively, with Haughton drawing a six-year term. He lost his seat at the 1928 Seanad election. He and his wife Margaret Elizabeth Goodbody had five children.
Links: a. President of the Executive Council of the Irish Free State b. Cork (city) c. Irish White Cross d. Irish War of Independence
Output:
d