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: Which comedy series for which Levitan was nominated for a 1996 Emmy ran longer? Passage:As executive producer, Levitan won an Emmy Award in 1996 for Frasier in the Outstanding Comedy Series category. He was also nominated in that same year for Outstanding Writing in Comedy Series category for The Larry Sanders Show. He was nominated for an Emmy in the Outstanding Writing for a Comedy Series category for Just Shoot Me! and two more as executive producer. Levitan won the Humanitas Prize (for writers whose work best communicates and encourages human values) in 1996 for the Frasier episode titled "Breaking the Ice". Levitan has also won a CableACE Award and a Writers Guild nomination for The Larry Sanders Show. He also garnered a Producers Guild Award and a Television Critics Association Award for Frasier, a People's Choice Award for Stark Raving Mad and a Golden Globe nomination for Just Shoot Me!
Links: a. Just Shoot Me! b. Frasier c. Frasier d. CableACE Award
Example Output: b

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 (JG7777th 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 Staffelkapitan (squadron leader) of 1. Staffel (1st squadron) of JG77, and in February 1944 the 8. Staffel of Jagdgeschwader 27 (JG2727th Fighter Wing) based in France. Reinert was then appointed Gruppenkommandeur (group commander) of IV. Gruppe (4th group) of JG27 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 (JG77th 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: How much time elapsed between the raid that damaged the Z33 and the Allied bomber attack? Passage:Z33 was a Type 1936A (Mob) destroyer built for the Kriegsmarine (German Navy) during World War II. Completed in 1943, the ship was damaged during the raid on the island of Spitsbergen in September and spent all of 1944 in Norwegian waters. She was damaged by British aircraft attacking the battleship in July. Z33 escorted troop convoys from northern Norway when the Germans began evacuating the area beginning in October. She ran aground in early 1945 as she was sailing for the Baltic and was badly damaged. While the ship was being towed to port for repairs, she and her escorts were attacked by Allied fighter-bombers. Z33 finally reached the Baltic in early April, but was reduced to reserve for lack of fuel. The ship was transferred to Cuxhaven and decommissioned shortly before the end of the war.
Links: a. Operation Zitronella b. Black Friday (1945) c. Spitsbergen d. Ship commissioning
Example Output:
a