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.

Ex Input:
Question: What team did Nick Foles play for when Minshew made his debut? Passage:On September 8, 2019, Minshew made his NFL debut against the Kansas City Chiefs when starter Nick Foles was taken out of the game due to a shoulder injury. He completed 22 of 25 passes for 275 yards, two touchdowns and an interception in the 40–26 loss. Minshew's pass completion percentage of 88% is the highest of any player making his debut in NFL history (minimum 15 pass attempts, since at least 1950), and also the highest single-game pass completion percentage in Jaguars history. Minshew was named the starter going forward after it was revealed that Foles had suffered a broken clavicle. During Week 2 against the Houston Texans, Minshew finished with 213 passing yards and a touchdown along with 56 rushing yards as the Jaguars lost 13–12. In Week 3, against the Tennessee Titans on Thursday Night Football, he earned his first victory as a professional. He passed for 204 yards and two touchdowns in the 20–7 victory. In Week 4, against the Denver Broncos, he passed for 213 yards and two touchdowns in the 26–24 victory. Late in the game, he engineered a drive that helped set up the Jaguars' game-winning field goal by Josh Lambo. During Week 5 against the Carolina Panthers, Minshew finished with 374 passing yards and two touchdowns as the Jaguars lost 27–34. After a Week 6 loss to the New Orleans Saints and a Week 7 victory over the Cincinnati Bengals, he had 279 passing yards and three passing touchdowns in a 29–15 victory over the New York Jets. During Week 9 against the Texans at Wembley Stadium, Minshew finished with 309 passing yards and 2 interceptions as the Jaguars lost 3–26. Days later, it was announced that Minshew would resume the backup role after Foles returned from his collar bone injury.
 Links: a. Nick Foles b. Nick Foles c. Wembley Stadium d. 2019 Houston Texans season

Ex Output:
a


Ex Input:
Question: Are the two canals which were built in 1914 and 1930, and which are located in parallel to the Lippe, of equal length to each other? Passage:Historically, the preconditions for a change of the landscape started with the construction of the Cologne-Minden trunk line in the 1840s that connected the river Rhine settlements like Cologne with harbours and trade at the river Weser and so with the Lippe town Hamm, too. Moreover, this railway supported the coal and steel industry development in the northern Ruhr region. The hard coal mining that started in the middle of the 19th century in the Emscher catchment area developed in the following decades direction north and so to the Lippe catchment area, too, where from the 1860s on first problems from mining subsidence and drainage of polluted water appeared. The historical city of Hamm and the towns Lünen, Haltern and Dorsten were small settlements located at the Lippe but expanded with the establishing of hard coal mines starting around 1900. The industrialization caused huge water quality problems in the Lippe tributaries and the Lippe itself; therefore first in 1913 the Sesekegenossenschaft and later in 1926 the Lippeverband as water boards (“Wasserwirtschaftsverbände”) were established. Since 1914 the Datteln-Hamm Canal and 1930 the Wesel-Datteln Canal are located in parallel to the Lippe which is not navigable for mass transportation. The canals receive Lippe water or feed the Lippe (to improve dry weather flow) from an exchange facility in Hamm, operated by the Wasserverband Westdeutsche Kanäle.
 Links: a. Cologne-Minden trunk line b. Wasserverband Westdeutsche Kanäle c. Datteln-Hamm Canal d. Weser

Ex Output:
c


Ex Input:
Question: How many territories did the British Empire rule when Rhodesia declared independence? Passage:Following Rhodesia's Unilateral Declaration of Independence from the British Empire, the new Rhodesian authorities started to crack down on African liberation movements. One of their considerations was to ban performance of "Ishe Komborera Africa" in African schools and public performance of it often made people liable for arrest by the British South African Police. The District Commissioner for Gutu abolished the Gutu African Council after its leader opened a meeting by singing "Ishe Komborera Africa" in the District Commissioner's presence. The Commissioner also had the leader arrested but he was released without charge. Following the Southern Rhodesian general election, 1980, after Zimbabwe Rhodesia returned to British control as Southern Rhodesia, Robert Mugabe's Zimbabwe African National Union party won to become the first government of an independent Zimbabwe. After this, "Ishe Komborera Africa" was selected to replace the official "God Save the Queen" of Southern Rhodesia and the unofficial "Rise, O Voices of Rhodesia" of Rhodesia as the national anthem of an independent Zimbabwe as it was a symbol of black African struggles and solidarity against apartheid systems in South Africa and Namibia. At the Zimbabwean independence ceremony, the Union Jack was lowered to "God Save the Queen" and the new flag of Zimbabwe was raised to "Ishe Komborera Africa" in Salisbury.
 Links: a. Rhodesia b. Zimbabwe Rhodesia c. Commissioner d. British Empire

Ex Output:

d