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.

Ex Input:
Question: How long is the body of water that Whittier Narrows is part of? Passage:During the expedition, Father Crespi observed a location along the river that would be good for a settlement or mission. However, in 1771, Father Serra instead commissioned two missionaries to establish the Mission San Gabriel Arcangel-San Gabriel Mission near the present day Whittier Narrows section of the San Gabriel River. The missionaries encountered resistance from the Tongva to their attempts to resettle the Natives on the mission. The mission encountered further trouble in 1776 when a flood damaged the mission, convincing the missionaries to move and rebuild the mission on a higher and more defensible location: its present site in San Gabriel. The first Spanish governor of Las Californias, Felipe de Neve had, as well, recommended to Viceroy Bucareli Father Crespi's location on the Rio Porciuncula (Los Angeles River) for a mission. Instead, in 1781, King Charles III mandated that a pueblo be built on the site instead, which would be the second town in Alta California, after San Jose de Guadalupe in 1777. The monarch, disregarding the production and trade roles of the missions, saw a greater need for secular pueblos to be established as the centers of agriculture and commerce to supply the crown's ever-growing military presence in "Nueva California." The priests at the missions ignored the royal mandate and continued their ranching, trading and production of tallow, soap, hides, and beef, often in competition with new pueblo ventures.
Links: a. Los Angeles River b. History of San Jose, California c. Los Angeles River d. Whittier Narrows

Ex Output:
d

Ex Input:
Question: How long was Ron Hughes Commander? Passage:Dunstan was then posted to the 1st Battalion, Royal Australian Regiment (1 RAR) as second-in-command in 1953. He then saw service in Korea including a period as Military Assistant to the Commander in Chief of the British Commonwealth Forces Korea, and was appointed a Member of the Order of the British Empire in the 1954 New Year Honours. Between May 1964 and February 1965, Dunstan commanded 1 RAR, before later holding an appointment at the 1st Recruit Training Battalion. Having reached the rank of colonel, in early 1968 he was deployed to Vietnam as deputy commander of the 1st Australian Task Force (1 ATF). He took over from Brigadier Ron Hughes as Commander of the 1 ATF on 21 May 1968 during the Battle of CoralBalmoral. For his services during this battle, he was appointed a Commander of the Order of the British Empire in 1969.
Links: a. 1st Battalion, Royal Australian Regiment b. Order of the British Empire c. Brigadier d. 1954 New Year Honours

Ex Output:
b

Ex Input:
Question: How many seats were available at the auditorium for the Academy awards in 1995? Passage:The 67th Academy Awards ceremony, organized by the Academy of Motion Picture Arts and Sciences (AMPAS) took place on March 27, 1995, at the Shrine Auditorium in Los Angeles beginning at 6:00p.m. PST / 9:00p.m. EST. During the ceremony, AMPAS presented Academy Awards (commonly referred to as the Oscars) in 23 categories honoring the films released in 1994. The ceremony, televised in the United States by ABC, was produced by Gilbert Cates and directed by Jeff Margolis. Comedian David Letterman hosted the show for the first time. Three weeks earlier in a ceremony held at the Regent Beverly Wilshire Hotel in Beverly Hills, California on March 4, the Academy Awards for Technical Achievement were presented by host Jamie Lee Curtis.
Links: a. Beverly Hills, California b. Los Angeles c. Beverly Hills, California d. Shrine Auditorium

Ex Output:
d