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 the person born who Freese took over drums for in 2003 on the album Splinter? Passage:Freese was the session drummer on the 2003 album Fallen by Evanescence and on the Acroma album released on Universal Records. He has drummed for A Perfect Circle since their first album, and is considered one of the core members. As of 2006, the band is on hiatus. Since then, founder Billy Howerdel has started up a new band (Ashes Divide) with drums contributed by Freese. Freese took over from drummer Ron Welty for the recording of the Offspring's 2003 album Splinter after Welty's departure from the band. He is credited for playing drums on the album, but Atom Willard later took on the position as the band's full-time drummer. In July 2007, it was announced Atom Willard had left the band. He would be replaced by Pete Parada. In the meantime, Freese was called upon to record the new Offspring album, Rise and Fall, Rage and Grace. In January 2011, he mentioned on his website that he was working with the Offspring again on their next album Days Go By.
Links: a. Ron Welty b. Days Go By (The Offspring album) c. Billy Howerdel d. Ron Welty
Example Output: a

Example Input: Question: Were the actor that played John Rollason and the actress that played his wife born in the same country? Passage:Dr. John Rollason (Peter Cushing), his wife, Helen (Maureen Connell), and assistant, Peter Fox (Richard Wattis), are guests of the Lama (Arnold Marle) of the monastery of Rong-buk while on a botanical expedition to the Himalayas. A second expedition, led by Dr. Tom Friend (Forrest Tucker) accompanied by trapper Ed Shelley (Robert Brown), photographer Andrew McNee (Michael Brill) and Sherpa guide Kusang (Wolfe Morris), arrives at the monastery in search of the legendary Yeti or Abominable Snowman. Rollason, despite the objections of his wife and the Lama, decides to join Friend's expedition. Whereas Rollason is motivated by scientific curiosity to learn more about the creature, Friend seeks fame and fortune and wants to capture a live Yeti and present it to the world's press.
Links: a. Botany b. Forrest Tucker c. Sherpa people d. Peter Cushing
Example Output: d

Example Input: Question: How old was the prime minister of the puppet government installed by the Axis? Passage:Musicki was stationed in Slavonski Brod at the time of the Axis invasion of Yugoslavia in April 1941 and served as the Royal Yugoslav Army commander responsible for the railroad between Belgrade and Zagreb in the rank of colonel. He demonstrated his support for the Germans by helping their forces during the invasion. Yugoslavia was quickly conquered by the Axis powers and Musicki remained in Slavonski Brod for several months after the conquest. He attempted to join the Ustase Militia there, but was rejected. He went to Belgrade in mid-August, where he was received by Zbor leader Dimitrije Ljotic. On 6 October, Milan Nedic, the Prime Minister of the Axis-installed puppet Government of National Salvation, appointed Musicki to lead the Serbian Volunteer Command (, SDK). Musicki was involved in executing Serb civilians in the town of Cacak in December 1941. He and Milan Acimovic contacted Chetnik leader Draza Mihailovic on 5 December, possibly in an effort to warn him in advance of the assault the Germans had planned, codenamed Operation Mihailovic. This action prompted the Germans to question Musicki's loyalty. He was removed from command at the end of 1941 and imprisoned by the Germans, but was later freed at Nedic's intervention.
Links: a. Milan Nedic b. Axis powers c. Chetniks d. Royal Yugoslav Army
Example Output:
a