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: When was Sale's first husband born? Passage:On June 21, 2012, Simpson married Canadian figure skater Jamie Salé, whom he had "known for years from the Edmonton skating scene". They had been paired as partners in late 2009 for the first season of the CBC show Battle of the Blades, which they won. Simpson and Salé have one daughter, Samantha Rae Simpson, born on July 7, 2013. Through this marriage, Simpson is also a stepfather to Salé's son Jesse Pelletier (born September 30, 2007), from her first marriage to skating partner David Pelletier. He also has three children from a previous marriage, including son Dillon, who was drafted by the Edmonton Oilers in the 4th round of the 2011 NHL Entry Draft and is currently a defenseman for the Bakersfield Condors.
 Links: a. Battle of the Blades b. David Pelletier c. Battle of the Blades (season 1) d. Stepfather
Example Output: b

Example Input: Question: How old was the Liberal Unionist MP when he died? Passage:Morton first stood for Parliament at the 1885 general election, when he contested Hythe, and was unsuccessful again in Christchurch at the 1886 election. He won a seat three years later, when he was elected at a by-election in October 1889 as the Member of Parliament (MP) for Peterborough, after the death of the Liberal Unionist MP John Wentworth-FitzWilliam, becoming the 81st new MP since the general election in 1886. His victory was unexpected, and when the result was declared he said that he hoped his victory would be seen as a gesture of conciliation Ireland. He was re-elected in 1892, and raised in Parliament the issue of the appointment of Justices of the Peace (magistrates) in April 1893. In November that year, 280 Gladstonian MPs met the Lord Chancellor, Lord Herschell, in the House of Lords to discuss the system. Morton led the response to the Lord Chancellor's explanation and defence of the existing system of appointment, and denounced the reliance on advice from Lord Lieutenants who were entirely dependent on what Morton called "class cliques". He was also a member of a Select Committee set up to examine the accommodation provided for members and officials of the House of Commons. Great Western Railway
 Links: a. Great Western Railway b. Parliament of the United Kingdom c. John Wentworth-FitzWilliam d. Hythe (UK Parliament constituency)
Example Output: c

Example Input: Question: Who succeeded Hasid as Postmaster General after his retirement? Passage:Arjan Jethanand Tanwani was born in Karachi on 7 January 1930 to a Sindhi family. He participated in Quit India Movement and was a Secretary of Students's Union at Kandiyaro High School. In 1947, he completed his Matriculation from Bombay University and married his wife, Parpari. After the Partition of India, the family migrated to Ahmedabad, India where he joined the Post and Telegraph Department. In 1989, he retired from the service as Postmaster General from Gondal, India. He worked as an All India Radio artist and was on the Sindhi Advisory Board of Central Sahitya Akademi for a decade. A book, Arjan Hasid: A Study, was published in 1996 based on his life and works. He was Chairman of Gujarat Sahitya Akademi in 2002. In 2004, he participated in 1st Indo-Pak Writers' conference at New Delhi and visited Sindh, Pakistan as a member of Indo-Pak conference where he attended the "Shah-Sachal-Sami International Seminar" at Karachi and presented a scholarly paper on 18th-century Sindhi poet Sami.
 Links: a. Sindhis b. Karachi c. Partition of India d. Postmaster General
Example Output:
d