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: How long had Shumilov been in the military when the Soviet invaded Poland? Passage:Colonel (promoted to Major General 4 June 1940) Mikhail Shumilov took command in April 1938. In September 1939, the corps fought in the Soviet invasion of Poland as part of the 10th Army. It included the 6th, 33rd, and the 121st Rifle Divisions at the beginning of the invasion on 17 September. By 2 October, these divisions had transferred to other units, and it included the 29th, 64th, and 145th Rifle Divisions instead. The corps headquarters relocated to Grodno in November and became part of the 11th Army. Between June and July 1940 it was briefly headquartered at Kovno before moving to Šiauliai in August, part of the Baltic Special Military District. The 11th transferred to the 8th Army in October, and included the 11th and 125th Rifle Divisions by the outbreak of the war. It defended a 40-kilometer sector on the left flank of the 8th Army, with its headquarters in the forests northwest of Skaudvilė. The 125th Rifle Division was in the corps' first echelon, holding covering the highway and railroad from Tilsit to Šiauliai. The 48th Rifle Division (part of the adjacent 10th Rifle Corps), after moving forward from Riga, was to take up positions on the left of the 125th. The corps' 73rd Corps Artillery Regiment included four battalions of 107 mm guns.
 Links: a. Mikhail Shumilov b. 11th Rifle Division c. 10th Rifle Corps d. Baltic Military District

Ex Output:
a


Ex Input:
Question: What country did McGillivray return to before taking a trip to Scotland and England? Passage:McGillivray returned to Montreal in 1793 and then took a trip to Scotland and England. He was now a partner in McTavish, Frobisher & Co., who controlled the NWC. With John Gregory, he was sent to manage the company's huge depot at Grand Portage, stirring jealousy among some of the other partners. When Joseph Frobisher retired in 1798, McGillivray took his place. He set up an agency at New York City to get around the East India Company's monopoly enabling them to trade with China. He was closely involved too with the firm of McTavish, Fraser & Co., at London, managed by another relation of his uncle's, John Fraser. In 1803, he helped organize the move of the NWC's main depot from Grand Portage to Thunder Bay. All this time he was dealing with relations with the Hudson's Bay Company and the splinter XY Company that had broken away from the NWC, led by John Richardson.
 Links: a. Montreal b. Montreal c. North West Company d. New York City

Ex Output:
a


Ex Input:
Question: What city was the person who defeated Ignacio in the second round born in? Passage:Born in Madrid, Truyol had a breakthrough season in 1996 when he came close to breaking into the top 100. Beginning the year ranked 238, by August he had made it to 104 in the world. In his first main draw appearance in an ATP Tour tournament, at the Trofeo Conde de Godó in Barcelona, Truyol reached the third round, with wins over Sándor Noszály and world number 25 Paul Haarhuis. A qualifier, he also managed to take eventual finalist Marcelo Ríos to three sets before being eliminated. Soon after he reached the second round of the Oporto Open and then won his first Challenger title, in Istanbul. He made his third ATP Tour appearance that season in Indianapolis and had an opening round win over the previous year's runner-up, Bernd Karbacher. In the second round he was beaten in three sets by Àlex Corretja. He made further main draw appearances in Bournemouth, Palermo and Tel Aviv to close out the year.
 Links: a. Madrid b. Àlex Corretja c. Amex-Istanbul Challenger d. Tel Aviv Open

Ex Output:

b


