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 team won the 1988 World Series? Passage:He made his Major League debut on May 24, 1994. In the game, Hamilton allowed three runs and five hits in six innings but ended up winning the game 6–3 after Phil Clark hit a three–run home run. Overall, Hamilton went 9–6 with a 2.69 ERA in 108 innings pitched. He was fifth in the Major League Baseball Rookie of the Year Award voting for the National League. In 1995, Hamilton went 6–9 with a 3.08 ERA in 30 starts and 204 innings pitched. Hamilton gave up 189 hits and 70 earned runs (89 unearned). Hamilton walked 56 batters and struck out 123. At age 25 in 1996, Hamilton put up a career high in wins (15) and his second most innings pitched (211). Hamilton accrued a 4.17 ERA in 33 starts, along with 206 hits allowed and 98 earned runs. In his fourth year with San Diego in 1997, Hamilton started on Opening Day for the Padres. In the game, he pitched six innings and gave up four runs on eight hits. The Padres won the game over the New York Mets 12–6. Hamilton compiled a 12–7 record with a 4.25 ERA for the season and gave up 69 walks and struck out 124. Hamilton suffered a shoulder injury that was described as an inflammation of the rotator cuff and bursa sac. This injury forced Hamilton onto the disabled list during the 1997 season. Hamilton called the injury "real scary", saying that he feared he may lose the ability to throw . During the 1998 off-season, San Diego acquired Kevin Brown through a trade with the Florida Marlins, giving San Diego three pitchers who could throw at and above, including Hamilton. With the Padres in 1998, Hamilton's last season in San Diego, he had a 13–13 record, 4.27 ERA in 34 starts and 217 innings pitched. He walked a career-high 106 batters and struck out 147. There was a rumored trade around the 1998 MLB trade deadline that would have sent Hamilton to the Detroit Tigers, but it never materialized. During the 1998 World Series, the Padres scheduled Hamilton to pitch game four but was passed over for game one starter Kevin Brown and instead entered game three to relieve starter Sterling Hitchcock. With San Diego, Hamilton went 55 and 44 with a 3.75 ERA in 934 innings pitched.
 Links: a. 1998 World Series b. Sterling Hitchcock c. Phil Clark (outfielder) d. Major League Baseball Rookie of the Year Award
Example Output: a

Example Input: Question: How long had the Royal Canadian Air Force existed the year that the McDonnell CF-101 Voodoo began being operated by them? Passage:The McDonnell CF-101 Voodoo was an all-weather interceptor aircraft operated by the Royal Canadian Air Force and the Canadian Forces between 1961 and 1984. They were manufactured by the McDonnell Aircraft Corporation of St. Louis, Missouri for the United States Air Force (as F-101s), and later sold to Canada. CF-101s replaced the obsolete Avro CF-100 Canuck in the RCAF's all-weather fighter squadrons. The Voodoo's primary armament was nuclear AIR-2A Genie unguided air-to-air rockets, and there was significant political controversy in Canada about their adoption. Although they never fired a weapon in wartime, the CF-101 served as Canada's primary means of air defence from Quick Reaction Alert facilities at Canadian airbases. The CF-101s were retired in the 1980s and replaced with McDonnell Douglas CF-18 Hornet fighters. Many examples are preserved in museums and parks in Canada and the United States.
 Links: a. AIR-2 Genie b. Royal Canadian Air Force c. McDonnell Douglas CF-18 Hornet d. Royal Canadian Air Force
Example Output: b

Example Input: Question: Where was the person who led the Ottoman Bosnian leadership born? Passage:The Ottoman Bosnian leadership led by Husein Gradaščević were outraged when Sultan Mahmud II granted Serbia autonomy and subsequently six districts from the Bosnia Eyalet with the Treaty of Adrianople. Husein Gradaščević had already begun to support the cause of the fallen Janissary after the Auspicious Incident and would not allow Mahmud II to further disintegrate Bosnian society. Instead of negotiating with Husein Gradaščević, the Grand Vizier Reşid Mehmed Pasha (already engaged in an aggressive campaign against Albanian pashas and beys) mobilized his Ottoman army towards Travnik. Disappointed by Reşid Pasha's move, Gradaščević marched forward with an army of 52,000 into Priština, and later fought and defeated Reşid Pasha at Štimlje. A Bosnian delegation reached the Grand Vizier's camp in Skopje in November of that year. The Grand Vizier promised this delegation that he would insist to the Sultan that he accept the Bosniak demands. His true intentions, however, were manifested by early December when his cannons attacked Bosnian units stationed on the outskirts of Novi Pazar. Reşid Mehmed Pasha later began an aggressive campaign into Bosnia with the assistance of the renegade kapetan Ali-paša Rizvanbegović and defeated the entire army of Bosnia Eyalet led by Husein Gradaščević outside the town of Stup.
 Links: a. Grand vizier b. Bey c. Pasha d. Husein Gradaščević
Example Output:
d

