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: How many species of the Aru Flying fox are there? Passage:Of the 62 flying fox species evaluated by the IUCN as of 2018, 3 are considered critically endangered: the Aru flying fox, Livingstone's fruit bat, and the Vanikoro flying fox. Another 7 species are listed as endangered; 20 are listed as vulnerable, 6 as near threatened, 14 as least concern, and 8 as data deficient. A further 4 are listed as extinct: the dusky flying fox, the large Palau flying fox, the small Mauritian flying fox, and the Guam flying fox. Over half of the species are threatened today with extinction, and in particular in the Pacific, a number of species have died out as a result of hunting, deforestation, and predation by invasive species. Six flying fox species are believed to have gone extinct from 1864 to 2014: the Guam, large Palau, small Mauritian, dusky, large Samoan, and the small Samoan flying foxes.
 Links: a. Endangered species b. Vanikoro flying fox c. Aru flying fox d. Critically endangered
Example Output: c

Example Input: Question: Which Russian city that Schandermani studied in was closer in distance to his former home town Tehran? Passage:Schandermani lived in Tehran, the capital of Iran. In 1953 US Central Intelligence Agency overthrew the Iranian government of Prime Minister Mohammed Mossadegh and restored Shah Mohammed Reza Pahlavi. Schandermani's father was a leftist politician. After CIA coup his father was arrested and sentenced to death. But he escaped from the detention centre and later on moved to the USSR where the Soviet officials granted him political asylum. In the early 60's Schandermani immigrated with his mother to Russia, where family was reunited. In 1961 he went to school in Moscow. Two years later he continued his school education in a special school for foreigners Interdom located in the Russian city Ivanovo. In 1971 he graduated from this school and moved to Dushanbe capitol of the former Soviet Republic of Tajikistan. In 1979 after the fall of the Shah's regime Schandermani went via West-Berlin back to Iran. After his arrival at the Tehran's airport Mehrabad he was arrested and jailed. Four days later he was expelled from the country to the German city Berlin, where he applied for political asylum. In 1992 he was naturalized and became citizen of the Federal Republic of Germany.
 Links: a. Berlin b. Iran c. Moscow d. Moscow
Example Output: c

Example Input: Question: Is the woman Nick is romancing older or younger than her fiancee? Passage:Nick Payne arrives in town after a shipwreck. Soon, he is romancing Brooke Logan. This eventually puts him at odds with her fiancée, Ridge Forrester. Their rivalry is exacerbated when his mother, Jacqueline Payne, reveals to Nick that he is the son of his employer, billionaire shipping magnate Massimo Marone making him Ridge's half-brother. Brooke chooses to marry Ridge. They go on their honeymoon in South America, where Ridge is kidnapped by a group of thugs working for Sheila Carter, a criminal who killed Ridge's wife Taylor Hayes. While saving Ridge, Brooke and Nick end up also being held captive by Sheila, demanding gold from Massimo. Ridge falls into a furnace and is presumed dead. While grieving, Brooke and Nick have sex. It is later revealed that Ridge is alive. Brooke realizes she is pregnant and is unsure if Ridge or Nick is the father. A DNA test reveals Nick is the father but months its later revealed that Ridge is actually the father. Brooke nearly marries Nick but the wedding is stopped by Ridge. Nick later had a brief romance with Ridge's half-sister, Felicia Forrester. She returned to L.A with a son called Dominick. Later, Nick begins to romance Bridget Forrester. They get married (a small interruption in their ceremony which reveals that Taylor Hayes was alive stops the initial wedding) at the Forrester Mansion. Bridget becomes pregnant, but finds out that Nick and her own mother, Brooke, had begun an affair. She faked an abortion. Nick and Bridget's stillborn baby Nicole was born in early 2006. They split up soon after. Nick, wanting Brooke back, stopped her wedding to Ridge and succeeded. Brooke and Nick finally married soon afterward. On one of the fashion show television shows Ridge purposely gave Brooke a scandalizing kiss causing Nick to lose it. Ridge continues his constant sexual advances to Brooke to try to break up Nick and Brooke and decides to put Brooke's sister Donna Logan on as lead model for Brooke's Bedroom to make Brooke jealous. Brooke leaves Nick in their bedroom in a huff when she sees Donna on television scantily clad and representing Brooke's Bedroom and goes to Ridge's house to confront him about it. Nick later slept with Bridget. Also during this time, Jackie falls off the staircase at the Forrester mansion and falsely claims that Stephanie pushed her. Nick blackmails Eric Forrester and the rest of the Forresters into selling him Forrester Creations or Stephanie will face charges. Brooke, furious at Nick's treatment of the Forresters, sells him her stock as well, ends her marriage to Nick and returns to Ridge.
 Links: a. Taylor Hayes (The Bold and the Beautiful) b. Brooke Logan c. Felicia Forrester d. The Bold and the Beautiful
Example Output:
b