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: What is the current population of the state from which The Army of Georgia returned in mid-May? Passage:On May 10, United States President Andrew Johnson had declared that the rebellion and armed resistance was virtually at an end, and had made plans with government authorities for a formal review to honor the troops. One of his side goals was to change the mood of the capital, which was still in mourning following the assassination of United States President Abraham Lincoln a month before at Ford's Theater. Three of the leading Federal armies were close enough to participate in the procession. The Army of the Tennessee arrived via train. The Army of Georgia, also under the command of William T. Sherman, had just completed its Carolinas Campaign and had accepted the surrender of the largest remaining Confederate army, that of Joseph E. Johnston. It arrived from North Carolina in mid-May and camped around the capital city in various locations, across the Potomac River from the Army of the Potomac, fresh off its victories over Robert E. Lee in Virginia. It had arrived in Washington on May 12. Officers in the three armies who had not seen each other for some time (in some cases since before the war) communed and renewed acquaintances, while at times, the common infantrymen engaged in verbal sparring (and sometimes fisticuffs) in the town's taverns and bars over which army was superior. Sherman, concerned that his Westerners would not present as polished an image as the eastern army, drilled his forces and insisted that uniforms be cleaned, buttons and brass shined, and that bayonets glistened.
Links: a. Campaign of the Carolinas b. President of the United States c. North Carolina d. North Carolina
Example Output: c

Example Input: Question: During what years was the Early Bronze Age? Passage:Iran is home to one of the world's oldest continuous major civilizations, with historical and urban settlements dating back to 7000 BC. The south-western and western part of the Iranian Plateau participated in the traditional Ancient Near East with Elam, from the Early Bronze Age, and later with various other peoples, such as the Kassites, Mannaeans, and Gutians. Georg Wilhelm Friedrich Hegel calls the Persians the "first Historical People". The Medes unified Iran as a nation and empire in 625 BC. The Achaemenid Empire (550330 BC), founded by Cyrus the Great, was the first true global superpower state and it ruled from the Balkans to North Africa and also Central Asia, spanning three continents, from their seat of power in Persis (Persepolis). It was the largest empire yet seen and the first world empire. The Achaemenid Empire was the only civilization in all of history to connect over 40% of the global population, accounting for approximately 49.4 million of the world's 112.4 million people in around 480 BC. They were succeeded by the Seleucid, Parthian, and Sasanian Empires, who successively governed Iran for almost 1,000 years and made Iran once again as a leading power in the world. Persia's arch-rival was the Roman Empire and its successor, the Byzantine Empire.
Links: a. Bronze Age b. Cyrus the Great c. Persepolis d. Central Asia
Example Output: a

Example Input: Question: Was Jay-Z married to Beyonce when the album that contained his first top 10 single was released? Passage:The Brooklyn native rapper Jay-Z had success on the Billboard Hot 100 with singles from his debut studio album Reasonable Doubt. In 1997 he had success outside of the US with singles like "Sunshine" which peaked at number 25 in UK, 18 in Germany and 22 in NZ. His next single "Wishing on a Star" peaked at number 13 in UK being his highest peak on the chart until Hard Knock Life (Ghetto Anthem). The next single "The City Is Mine was the most successful single of In My Lifetime, Vol. 1. The album peaked at number 3 on the Billboard 200 and it received positive reviews from critics. In 1998 he released the smash hit singles "Can I Get A..." and "Hard Knock Life (Ghetto Anthem)" which peaked at number 19 and 15 on the Hot 100 and had wide success worldwide, too. The singles helped the album Vol. 2... Hard Knock Life to debut at number 1 on the Albums chart and selling over 5 million copies. Vol. 3... Life and Times of S. Carter had hits like "Jigga My Nigga" which peaked at number 1 on the Rap chart and #28 on the Hot 100. Hits like "Girl's Best Friend" and "Big Pimpin'" were released and the later peaked at #18 on the Hot 100 earning a platinum certification by the RIAA. His next album was released shortly after Vol 3. The album sold 500k first week and had the hit "I Just Wanna Love U (Give It 2 Me)" which peaked at number one on the R&B/Hip-Hop chart being his first single to reach that peak. In 2001 he released his classic album The Blueprint which spawned his first top 10 single "Izzo (H.O.V.A.)" which was produced by Kanye West. The Blueprint peaked at number one on the Billboard 200 selling 400k, eventually reaching 2 million. The sequel followed in 2002 and had hits like "'03 Bonnie & Clyde" , "Excuse Me Miss" both peaking inside the top 10 on the Hot 100. The first single was his most successful single worldwide for Jay since "Hard Knock Life (Ghetto Anthem)". The album sold 500k but it received mixed reviews. The Black Album was released and had three hit singles and 2 of them were top 10. The album was considered a classic and Jay said it would be his last album. The project reached #1 on the albums chart and it won a Grammy for "99 Problems". Even though he said The Black Album would be his last album he released a collaboration EP with Linkin Park spawning a hit single which earned a Grammy.
Links: a. The City Is Mine b. Jay-Z c. Kanye West d. Linkin Park
Example Output:
b