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.

Input: Consider Input: Question: How long is the fault that lies to the east of Ice Mountain? Passage:Ice Mountain is an arc-shaped forested ridge of the Allegheny Mountains, part of the Ridge-and-valley Appalachians. It is above mean sea level at its summit. Ice Mountain is a large mass of Devonian Oriskany (Ridgeley) sandstone and Marcellus shale with numerous bare rock slopes and vertical cliffs. Ice Mountain lies on the west side of the Timber Mountain anticline and to the west of North Mountain fault, which places it on the Martinsburg allochthonous sheet. Ice Mountain is situated along North River and is known for the several hundred yards of ice that form at its base all year long. At its southern end overlooking the community of North River Mills is located Raven Rocks, a set of stone chimney outcrops. Raven Rocks is in height above mean sea level with vertical cliffs measuring nearly in height. Raven Rocks were named because of the presence of ravens during pioneer days. The present Raven Rocks is the remaining vestige of a once towering cliff that overlooked the North River. Geologically, Ice Mountain is a northern extension of North River Mountain.
 Links: a. Anticline b. Fault (geology) c. North Mountain (Virginia-West Virginia) d. Outcrop

Output: c


Input: Consider Input: Question: When was the high school that Rogers graduated from founded? Passage:Rogers was born in Somerville, Massachusetts, in 1921. He graduated from Newton North High School in Newtonville in 1939. He enlisted as a private in April 1942, became an aviation cadet in August 1942, and completed pilot training and received a commission as a second lieutenant at Yuma, Arizona in 1943. During World War II, Rogers served as a P-39 Airacobra pilot with the 353rd Fighter Squadron at Hamilton Field, California He moved with the squadron to the European Theater of Operations, flew P-51 Mustang aircraft and became squadron commander. He is a fighter ace, credited with 12 enemy aircraft while flying from bases in England, Italy and France. He returned to the United States in January 1945 and was assigned to flying duties in fighter aircraft until November 1945 when he became commandant of troops at Hunter Field, Georgia. Between September 1946 and June 1947, he served as flight commander, operations officer, and commander of the 77th Fighter Squadron, 20th Fighter Group, at Shaw Air Force Base, South Carolina. He next was a student at the University of Virginia under the Air Force Institute of Technology program from July 1947 to August 1949. In August 1949 Rogers was transferred to Headquarters United States Air Force as an intelligence staff officer in the Directorate of Intelligence. He attended the language course at Lacaze Academy in Washington D.C., from October 1952 to June 1953, in preparation for attaché duties. He received a bachelor of science degree in military science from the University of Maryland in 1952. Rogers served as assistant air attach in Madrid, Spain from June 1953 to February 1957. He then returned to Headquarters United States Air Force as chief of the Current Intelligence Branch in the Office of the Deputy Chief of Staff, Operations. In 1958 he was transferred to the Organization of the Joint Chiefs of Staff as director of current intelligence, J-2, and in August 1960 entered the National War College. In July 1961 he was assigned to the Office of the Assistant Secretary of Defense with duty station at the State Department.
 Links: a. Air Force Institute of Technology b. 353rd Combat Training Squadron c. Newton North High School d. European Theater of Operations, United States Army

Output: c


Input: Consider Input: Question: What was the first year of the show where Scion was first introduced? Passage:Scion was marketed as a youth brand and was first introduced in March 2002, at the New York Auto Show. There were just two concept vehicles, the bbX (which became the xB), and the ccX (which became the tC). The 2004 xA and xB were unveiled at the Greater Los Angeles Auto Show on January 2, 2003. They were available only in 105 Toyota dealerships in California at their initial launch on June 9, 2003. The subsequent rollout of the brand to the South, the Southeast, and the East Coast occurred in February 2004. Scion vehicles were available nationwide in June 2004, coinciding with the release of the 2005 tC. On December 16, 2006, Scion unveiled the next-generation xB, based on the t2B concept, and the new xD, successor of the xA, at an invitation-only, no-camera event in Miami. Both cars were then publicly unveiled on February 8, 2007 at the Chicago Auto Show. The xD, a 5 door-subcompact car that is sold in Japan as the second generation Toyota ist, was based on the Yaris platform with the tenth-generation Corolla's engine.
 Links: a. New York International Auto Show b. New York International Auto Show c. Scion xB d. LA Auto Show


Output: a


