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 group ruled the area for a longer period of time, the Arabs or the Byzantines? Passage:The first permanent Arab settlement on Sicily occurred in 827, but it was not until Taormina fell in 902 that the entire island fell under their sway, though Rometta held out until 965. In that year the Kalbids established the independence of their emirate from the Fatimid Caliphate. In 1061 the first Norman liberators took Messina, and by 1071 Palermo and its citadel (1072) were captured. In 1091 Noto fell to the Normans, and the conquest was complete. Malta fell later that year, though the Arab administration was kept in place, marking the final chapter of this period. The conquests of the Normans established Roman Catholicism firmly in the region, where Eastern Christianity had been prominent during the time of Byzantine rule and even remained significant during Islamic period. Widespread conversion ensued, leading to the disappearance of Islam in Sicily by the 1280s. In 1245, Muslim Sicilians were deported to the settlement of Lucera, by order of Holy Roman Emperor Frederick II. In 1300, Giovanni Pipino da Barletta, count of Altamura, seized Lucera and exiled or sold into slavery its population, bringing an end to the medieval Muslim presence in Italy.
 Links: a. Messina b. Taormina c. Frederick II, Holy Roman Emperor d. Frederick II, Holy Roman Emperor
Example Output: b

Example Input: Question: Was his mother still alive when Benigno Simeon Aquino III took the oath? Passage:By tradition, it is also the chief justice who swears into office the President of the Philippines. One notable deviation from that tradition came in 1986, and later again in 2010. Due to the exceptional political circumstances culminating in the People Power Revolution, on February 25, 1986, Corazon Aquino took her oath of office as President before then Associate Justice Claudio Teehankee in San Juan just minutes before Ferdinand Marcos took his own oath of office also as President before Chief Justice Ramon Aquino. Marcos fled into exile later that night. More than two decades afterwards, Benigno Simeon Aquino III followed in his mother's footsteps (with almost similar reasons) by having then Associate Justice Conchita Carpio-Morales to administer his oath of office, rather than then Chief Justice Renato Corona (who was eventually impeached halfway through Aquino's term). Six years later, in 2016, Rodrigo Duterte took his oath of office before Associate Justice Bienvenido Reyes, his classmate at San Beda College of Law, instead of Chief Justice Maria Lourdes Sereno (who would eventually be removed thru quo warranto after it was determined that she had been unlawfully holding office ab initio).
 Links: a. Ferdinand Marcos b. Corazon Aquino c. Rodrigo Duterte d. Corazon Aquino
Example Output: b

Example Input: Question: What other popular films is Danny Boyle known for other than Slumdog Millionaire? Passage:Maxima is named after Russian novelist Maxim Gorky. She belongs to a Bengali-speaking Basu family residing in Delhi. She made her debut with Slumdog Millionaire (2009), in which she designed costumes and assisted Danny Boyle, who earned Academy Award for Best Director for the film. Later, she switched to designing costumes with 2013 blockbuster Goliyon Ki Raasleela Ram-Leela. Director Sanjay Leela Bhansali gave her the chance. He later repeated her for his next venture Bajirao Mastani. She was applauded nationally. Sanjay, Priyanka Chopra, Deepika Padukone and Ranveer Singh was all in praise for her dresses on their characters. She earned Filmfare Award for Best Costume Design in 2016 for the film. In 2017, she worked in two films : Bank Chor and Dangal, the latter being the highest grossing Indian film of all time. In 2017, popular designers Manoshi Nath and Rushi Sharma were scheduled to design dresses for Dangal, the highest grossing Indian film of all time. But co-producer Aamir Khan replaced them with her, giving the reason that they charged too much money for the film's budget. The film earned her second Filmfare Nomination.
 Links: a. Deepika Padukone b. Basu c. Basu d. Danny Boyle
Example Output:
d