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: Did the Phillies win the league championship the year that Roberts won 20 games? Passage:Of those Phillies, 97 have had surnames beginning with the letter R. Two of those players have been inducted into the Baseball Hall of Fame: pitcher Eppa Rixey, who was a Phillie for six seasons in two different stints (19121917, 1919); and Robin Roberts, who won 20 games during the 1950 season as the ace pitcher of the Whiz Kids. The Hall of Fame lists the Phillies as Roberts' primary team; during his career, the right-hander won 234 games and lost 199, the latter one of his three franchise records. During his 14 seasons with the team, he pitched 3,739 innings and completed 272 games, both records; he also held the major league record for most career home runs allowed until it was broken in 2010. Roberts was also elected to the Philadelphia Baseball Wall of Fame as the Phillies' first inductee in 1978.
Links: a. 1950 Philadelphia Phillies season b. 1950 Philadelphia Phillies season c. Winloss record (pitching) d. R
Example Output: a

Example Input: Question: How old was Anuradha Paudwal when she discovered Nikhil and Vinay and introduced them to Gulshan Kumar? Passage:Nikhil and Vinay are both trained in classical music. Singer Anuradha Paudwal discovered the duo and recommended them to Gulshan Kumar, owner of T-Series music company, and director Chandra Barot, who signed them for the 1991 romantic film Pyar Bhara Dil. The song "Banke Kitab Teri" from the film became popular. The duo then went on to compose music for over 20 films. Their initial successes included Bewafa Sanam (1995), a film which was breakthrough for playback singer Sonu Nigam, English Babu Desi Mem (1996), Uff Yeh Mohabbat (1997) and Papa The Great (2000). The duo composed music for two of Sonu Nigam's successful music albums, Jaan (1999) and Yaad (2001). They went on to score music for Anubhav Sinha's box office success Tum Bin which included hit songs such as "Koi Fariyaad", "Chhoti Choti Raatein" and "Tumhare Siva". Some of their other successful ventures include Hum Tumhare Hain Sanam, Aapko Pehle Bhi Kahin Dekha Hai, Muskaan and Kuch Dil Ne Kaha. The duo have also been accused of plagiarism by Pakistani singer Faisal Latif.
Links: a. Anuradha Paudwal b. Anuradha Paudwal c. Tum Bin d. Chandra Barot
Example Output: a

Example Input: Question: How old was the Spanish governor when Hutten and Welser were xecuted? Passage:Klein-Venedig (Little Venice) was the most significant part of the German colonization of the Americas, from 1528 to 1546, in which the Augsburg-based Welser banking family obtained colonial rights in Venezuela Province in return for debts owed by Charles I of Spain. The primary motivation was the search for the legendary golden city of El Dorado. The venture was initially led by Ambrosius Ehinger, who founded Maracaibo in 1529. After the deaths of first Ehinger (1533) and then his successor Nikolaus Federmann, Georg von Speyer (1540), Philipp von Hutten continued exploration in the interior, and in his absence from the capital of the province the crown of Spain claimed the right to appoint the governor. On Hutten's return to the capital, Santa Ana de Coro, in 1546, the Spanish governor Juan de Carvajal had Hutten and Bartholomeus VI Welser executed, and Charles subsequently revoked Welser's charter.
Links: a. Juan de Carvajal b. Philipp von Hutten c. German colonization of the Americas d. Ambrosius Ehinger
Example Output:
a