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 of Eugenio's cousins in the first degree reigned longer with their respective titles? Passage:In addition to being a cousin in the first degree of Victor Amadeus III of Sardinia and of Louis Joseph of Bourbon, Prince de Condé, Eugènio's sister Maria Teresa (1749-1792) had married Louis Alexandre de Bourbon, Prince de Lamballe, the heir of a legitimised branch of the French royal family when he was 13, and had become the close friend and Surintendante of the French queen, Marie Antoinette of Austria, by 1775. As his elder brother, Victor Amadeus, was heir to the Carignano princedom, the traditional occupations for a younger son of a princely house, an episcopal or military sinecure, beckoned him to the French court. Upon reaching adulthood, he assumed a family title, Count of Villafranca, and obtained a commission in the French army service as proprietary colonel of the Villefranche Regiment, and was known there as "Prince Eugène, comte de Villefranche".
 Links: a. Victor Amadeus III of Sardinia b. Legitimation c. Sinecure d. Victor Amadeus III of Sardinia
Example Output: a

Example Input: Question: How many people lived in the Massachusetts Bay Colony the year that Hutchinson was banished from there? Passage:John Cotton and Anne Hutchinson regarded preparationism as a covenant of works, a criticism that was one of the causes of the Antinomian Controversy, which led to Hutchinson being banished from the Massachusetts Bay Colony in 1638. Historians have debated the factors in Hutchinson's downfall, including issues of politics and gender; but intellectual historians have focused on theological factors, including preparationism, antinomianism, mortalism, and the idea of sanctification being evidence of justification. Harvard University historian Perry Miller views the incident as a "dispute over the place of unregenerate human activity, or 'natural ability', preparatory to saving conversion." Similarly, Rhys Bezzant sees the Antinomian crisis as pitting Hutchinson and others against "the defenders of preparationist piety." Bezzant goes on to argue that Jonathan Edwards distanced himself from his grandfather Solomon Stoddard's "preparationist model of conversion."
 Links: a. Massachusetts Bay Colony b. Jonathan Edwards (theologian) c. Massachusetts Bay Colony d. John Cotton (minister)
Example Output: a

Example Input: Question: Which country operated the U-boats that airships were trying to locate near the Strait of Gibraltar? Passage:In 1944, Argentia served as one of the two stopover bases for the refuelling, maintenance, and crew changes of the six United States Navy (USN) K-class blimps that made the first transatlantic crossings of non-rigid airships. Blimps K-123 and K-130 from USN Blimp Squadron 14 (also known as ZP-14, Blimpron 14, or "The Africa Squadron") left South Weymouth Naval Air Station in Massachusetts on 28 May 1944 and landed at Argentia about 16 hours later. The two K-ships then flew for approximately 22 hours to Lages Field on Terceira Island in the Azores, the second stopover base for the transatlantic flights. The last leg was a ~20-hour flight to the squadron's final destination with Fleet Air Wing (FAW) 15 at Port Lyautey, French Morocco (now Kenitra, Morocco). Blimps K-123 and K-130 were followed by K-109 and K-134 then K-112 and K-101 which left South Weymouth on 11 and 27 June, respectively, in 1944. These six blimps initially conducted nighttime anti-submarine warfare operations to complement the daytime missions flown by FAW-15 aircraft (PBYs and PB4Y-2) using magnetic anomaly detection to locate U-boats in the relatively shallow waters around the Strait of Gibraltar. Later, ZP-14 K-ships conducted minespotting and minesweeping operations in key Mediterranean ports and various escort missions including that of the convoy carrying Franklin Roosevelt and Winston Churchill to the Yalta Conference in early 1945. In late April 1945, K-89 and K-114 left NAS Weeksville (now Coast Guard Air Station Elizabeth City) in North Carolina and flew a southern route to NAS Bermuda, the Azores, and Port Lyautey, where they arrived on 1 May 1945.
 Links: a. Weeksville Dirigible Hangar b. Consolidated B-24 Liberator c. Blimp d. U-boat
Example Output:
d