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: Who was the founder of the record company that signed Funkadelic? Passage:By 1970, the five Parliaments singers were touring with five backing musicians known separately as Funkadelic. The highly rehearsed performances and suited look of The Parliaments gave way to the members dressing in their own outrageous styles. Haskins wore long johns on stage. Due to the contractual issues surrounding the group name, Clinton signed the band as Funkadelic to Westbound Records. The ensemble released their first album Funkadelic in 1970. Clinton also renamed his group of singers Parliament (but still with the Funkadelic musicians as official members) and signed that act to the Holland-Dozier-Holland-owned record label, Invictus. Parliament released their first album Osmium in 1970. Clinton now had two groups that were actually one entity. Under the name Funkadelic, the ensemble was geared towards a rock audience, and as Parliament it was aimed at a soul music audience. Collectively, they became known as Parliament-Funkadelic, or P-Funk. Haskins contributed to P-Funk as a writer through 1972. He toured and appeared on P-Funk albums as a singer, and occasionally as a guitarist, throughout the 1970s. In June 1977 at the height of P-Funk's popularity, Haskins (along with other original Parliaments Calvin Simon and Grady Thomas) left the ensemble over financial and management disputes with Clinton.
 Links: a. Osmium (album) b. Long underwear c. Westbound Records d. Parliament (band)
Example Output: c

Example Input: Question: How old was Ibrahim Pasha the year the conquest of the Sudan began? Passage:The reign of Farouk was characterized by ever increasing nationalist discontent over the British occupation, royal corruption and incompetence, and the disastrous 1948 Arab–Israeli War. All these factors served to terminally undermine Farouk's position and paved the way for the revolution of 1952. Farouk was forced to abdicate in favor of his infant son Ahmed-Fuad who became King Fuad II, while administration of the country passed to the Free Officers Movement under Muhammad Naguib and Gamal Abdel Nasser. The infant king's reign lasted less than a year and on June 18, 1953, the revolutionaries abolished the monarchy and declared Egypt a republic, ending a century and a half of the Muhammad Ali Dynasty's rule. Emerging victorious from a war-triangle (Ottomans, Mamluks, and his loyal troops), Mehmed Ali made good use of Albanian irregulars services as mercenaries and troops to bolster his reign. Albanian mercenaries, or Arnauts, presented the backbone of Ali's army and were known as elite and undisciplined soldiers of the Ottoman Empire armies. With the rise of Muhammad Ali in power, many of them would settle in Egypt and serve there. By 1815, the number of Albanian military was over 7000. Albanian troops partook in the war against the Wahhabi movement in Arabia (1811–18) and in the conquest of the Sudan (1820–24). The number of Albanian troops would diminish in 1823, when Ibrahim Pasha, Ali's son, would join the Ottoman armies in the Greek War of Independence along with circa 17,000 men, many of them Albanians. Ali's dynasty would continue to rule Egypt until 1952.
 Links: a. Free Officers Movement (Egypt) b. Egyptian revolution of 1952 c. Ibrahim Pasha of Egypt d. Free Officers Movement (Egypt)
Example Output: c

Example Input: Question: What was the vocal range of the singer who performed in Samson and Delilah as Delilah at the Metropolitan Opera during its 1915/1916 season? Passage:The Metropolitan Opera revived the opera in its 1915/1916 season with Margaret Matzenauer as Delilah, Enrico Caruso as Samson, and Pasquale Amato as the High Priest. Since then the company has staged productions of the opera at least once every decade giving more than 200 performances of the work. Plácido Domingo performed as Samson in the 1981 San Francisco Opera production co-starring Shirley Verrett, under Julius Rudel and at the Metropolitan Opera's 1998 production with Olga Borodina. More recent productions of the opera by the Metropolitan have been in 2006, with Marina Domashenko and Olga Borodina alternating as Delilah, and in 2018 with Elīna Garanča and Roberto Alagna. The Lyric Opera of Chicago gave their first performance of the opera in November 1962 with Rita Gorr as Delilah and as Samson. The company has revived the work numerous times since then, most recently in their 2003/2004 season with Olga Borodina as Dalila and José Cura as Samson. Likewise, the San Francisco Opera has staged the opera 10 times during its history giving its first performance in 1925, with Marguerite d'Alvarez and Fernand Ansseau in the principal roles, and its most recent performance in 2008, with Borodina and Clifton Forbis.
 Links: a. Julius Rudel b. Fernand Ansseau c. Margaret Matzenauer d. Marguerite d'Alvarez
Example Output:
c