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: 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: In what city and country was the  Jagdgeschwader 77 based? Passage:Born in Cologne-Lindenthal, Reinert volunteered for military service in the National Socialist Luftwaffe in 1938. Following flight training, he was posted to Jagdgeschwader 77 (JG 77—77th Fighter Wing). He fought in Operation Barbarossa, the German invasion of the Soviet Union, and claimed his first aerial victory on 8 August 1941. He received the Knight's Cross of the Iron Cross following his 53rd aerial victory. Accumulating further victories, he surpassed the century mark in October 1942 for which he was awarded the Knight's Cross of the Iron Cross with Oak Leaves. In November 1942, his unit was transferred to the Mediterranean theatre in support of the Afrika Korps. There, Reinert claimed 51 victories against the Western Allies. In August 1943, he was appointed Staffelkapitän (squadron leader) of 1. Staffel (1st squadron) of JG 77, and in February 1944 the 8. Staffel of Jagdgeschwader 27 (JG 27—27th Fighter Wing) based in France. Reinert was then appointed Gruppenkommandeur (group commander) of IV. Gruppe (4th group) of JG 27 and, credited with 174 aerial victories, received the Knight's Cross of the Iron Cross with Oak Leaves and Swords on 30 January 1945. He then received conversion training to the then new Messerschmitt Me 262 jet fighter and was posted to Jagdgeschwader 7 (JG 7—7th Fighter Wing), an all-jet fighter wing.
 Links: a. Jagdgeschwader b. Knight's Cross of the Iron Cross c. Jagdgeschwader 27 d. Knight's Cross of the Iron Cross
Example Output: a

Example Input: Question: Which is the oldest school that Bill Hastings attended? Passage:Born in Scarborough, Ontario, Canada in 1957, he attended Lord Roberts Public School, graduated from Midland Avenue Collegiate Institute, holds a BA from the University of Trinity College, University of Toronto, law degrees from Osgoode Hall Law School and the London School of Economics, and was a practising barrister. He moved to New Zealand in 1985. Before becoming Chief Censor, he was Deputy and Acting Chief Censor from December 1998 to October 1999, Senior Lecturer in Law (teaching Legal System and International Law), Deputy Dean of Law, and a member of the governing Council, at Victoria University of Wellington. He was also briefly the Video Recordings Authority in 1994, a member of the Indecent Publications Tribunal from 1990 to 1994 and Deputy President of the Film and Literature Board of Review from 1995 to 1998. In 2010 he stood down as Chief Censor when he became a District Court Judge and Chair of the Immigration and Protection Tribunal. He was succeeded by Andrew Jack.
 Links: a. Midland Avenue Collegiate Institute b. Andrew Jack (censor) c. International law d. Ontario
Example Output:
a