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.

[Q]: Question: Did Blake or Philby defect first? Passage:In May 1986, Souther requested Soviet citizenship, aware that the investigation against him was progressing. In June, fearing imminent arrest, Souther defected to the Soviet Union by flying from the United States to Rome, where the Soviet intelligence services transferred him to Moscow. Initially, Soviet counterintelligence units were suspicious of Souther's defection and feared that he was a double agent for the CIA, but he was cleared shortly afterwards. On 2 October 1986, Souther was granted Soviet citizenship in a decree from the Presidium of the Supreme Soviet, and adopted the Russian name Mikhail Yevgenyevich Orlov. Souther was well-received by the Soviet authorities, gifting him an apartment in Moscow and a dacha on the outskirts of the city, and promoting him to the rank of major in the KGB – one of few foreign spies to be commissioned as an officer in the agency. Souther became actively engaged in scientific activities, developed his own English teaching program, walked around Moscow a lot, and travelled to other Soviet cities. Souther met and befriended other foreign Soviet intelligence agents that had defected including Kim Philby and George Blake. Souther married a Russian woman named Elena, an English teacher at the Intelligence Institute, and they had a daughter named Alexandra. In early 1989, Souther was awarded an Order of Friendship of Peoples for his contributions in the intelligence services following a petition from the KGB leadership.
 Links: a. George Blake b. George Blake c. Dacha d. Major
[A]: a


[Q]: Question: What was Montana's population the year that Thom Ross completed his work "Custer's Last Stand"? Passage:Ross' first plywood installation was a 1976 cutout of Clint Eastwood, which he and a friend placed as a prank above a railroad trestle to recreate a scene from Dirty Harry in the location where the scene had been filmed five years earlier. In 1983 Ross created "154 Nevermore", an installation of 154 plywood ravens on a highway in Jackson, Wyoming (recreated in steel in 2000). In 1984, Ross created "the Catch", a diorama for the Baseball Hall of Fame illustrating a legendary catch with the same nickname, by Willie Mays in the 1954 World Series. He created a new version of the work in 2004, and displayed it in various locations in New York City. In 1998 Ross created "The Defining Moment" for SAFECO Field, a tableau of 11 steel cutouts of a Ken Griffey, Junior play in the 1995 baseball playoffs. Ross' 2005 work, "Custer's Last Stand", was a recreation of life-sized warriors riding life-sized horses the Battle of Little Bighorn at the original site at Medicine Tail Coulee in Montana. That exhibit toured Cody, Wyoming, Jackson, Wyoming, and Sun Valley, Idaho. In September, 2008 Ross recreated a 1902 photograph of Buffalo Bill Cody and his "Wild West Show", his traveling troupe of Native Americans, in front of the Cliff House at Ocean Beach.
 Links: a. National Baseball Hall of Fame and Museum b. Battle of the Little Bighorn c. Montana d. T-Mobile Park
[A]: c


[Q]: Question: How long before John Denniston matriculated was the school he attended built? Passage:Having matriculated at the University of Glasgow, where he won an entrance scholarship, he left that university to join his father and other members of the family to emigrate to New Zealand. They landed in Otago in 1862 and Denniston Sr. took up a run Oteramika in Southland. His father died at his house at Fendalton, Christchurch, in 1897. Denniston Jr saw service in various capacities, including the civil service and that of the Bank of New South Wales, and then became a law student with William Downie Stewart. He was admitted to the New Zealand Bar at Dunedin by Justice Chapman on 4 August 1874. For some months he practised at Wanganui in partnership with George Hutchison, afterwards a prominent member of the House of Representatives. In 1875, he became associated with Downie Stewart in Dunedin and the firm was subsequently joined by Allan Holmes, son of the Hon. Mathew Holmes, MLC, under the style of Stewart, Holmes and Denniston, and acquired an extensive practice in Otago. Court work was undertaken by Denniston, whose name was connected with most of the important civil and criminal cases in the province. In 1889, he was elevated to the bench on the death of Justice Alexander James Johnston and was sworn in by His Honour Sir James Prendergast, Chief Justice of New Zealand, in February 1889. Denniston was knighted on 21 February 1917 upon his retirement from the bench.
 Links: a. University of Glasgow b. University of Glasgow c. George Hutchison (New Zealand politician) d. Oteramika
[A]:
a