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: Which movie did Indrajith Sukumaran act in immediately preceding his role in Amen? Passage:It took another two years before he came up with his third movie, Amen, in 2013, which had Indrajith Sukumaran, Fahad Fasil, Swathi Reddy and Kalabhavan Mani in the lead roles and the movie succeeded at the box office while drawing good critical response. After a gap of almost two years, Pellissery released his fourth film, Double Barrel, a comic thriller, with Prithviraj Sukumaran, Indrajith Sukumaran, Arya, Sunny Wayne and Asif Ali in the lead roles. However, the film did not succeed critically or commercially. The next project, Angamaly Diaries, a black comedy cloaked in a gangster plot that revolves around the locale of Angamaly, was scripted by popular actor, Chemban Vinod Jose. The film, made on a small budget of million, was received well at the box office and drew critical acclaim; Anurag Kashyap opined that Angamaly Diaries was his film of the year. Ee.Ma.Yau, his next film based on a satire written by P. F. Mathews and with his regular composer, Prashant Pillai, scoring the music, was premiered on November 30, 2017 but the release was delayed due to undisclosed reasons. Before it was released on May 4, 2018, the film received the Kerala State Film Award for Best Director at the 48th Kerala State Film Awards. The film also won him the Silver Peacock Award for the best director at the 49th International Film Festival of India (IFFI), 2018, which was held in Goa in November 2018 (Chemban Vinod Jose, the protagonist of the film, also received the Silver Peacock Award for the best actor.) followed by the Sinema Zetu International Film Festival Award for Best Direction.
 Links: a. Indrajith Sukumaran b. Arya (actor) c. P. F. Mathews d. Chemban Vinod Jose
Example Output: a

Example Input: Question: What war were the boats like Kennedy was on used in? Passage:Within weeks, many Americans could recite favorite lines from the record, including "the rubber schwan [swan] is mine", and "move ahead...with great vigah [vigor]", the latter lampooning the President's own words. The album poked fun at Kennedy's PT-109 history; the rocking chairs he used for his painful back; the Kennedy clan's well-known athleticism, football games and family togetherness; children in the White House; and Jackie Kennedy's soft-spoken nature and her redecoration of the White House; and many other bits of knowledge that the public was eager to consume. Kennedy himself was said to have given copies of the albums as Christmas gifts, and once greeted a Democratic National Committee group by saying, "Vaughn Meader was busy tonight, so I came myself." According to UPI reporter Merriman Smith, during a Cabinet meeting Kennedy played the entire record for everyone. At one press conference, Kennedy was asked if the album had produced "annoyment (sic) or enjoyment." He jokingly responded, "I listened to Mr. Meader's record and, frankly, I thought it sounded more like Teddy than it did me. So, now he's annoyed."
 Links: a. American football b. Patrol torpedo boat PT-109 c. Democratic National Committee d. Ted Kennedy
Example Output: b

Example Input: Question: What is the population of Lacey? Passage:SR 510 begins as Marvin Road at exit 111, a diamond interchange on (I-5) in southern Lacey. The highway travels south by the Hawks Prairie Village Mall, home of the Hawks Prairie Center, a division of the South Puget Sound Community College. South of the mall is the Martin Way intersection, located west of River Ridge High School and one of the busiest intersections on the roadway at a daily average of 24,000 motorists in 2008, and the Pacific Avenue roundabout, where SR 510 turns east, renamed Pacific Avenue, northeast of Long Lake. After leaving Lacey city limits, the roadway begins to parallel the Quadlok line owned by Tacoma Rail south towards the Old Pacific Highway. At the Old Pacific Highway, the road becomes the St. Clair Cutoff Road, named for nearby Saint Clair Lake, and crosses the railroad tracks twice. After turning northeast, parallel to Saint Clair Lake's shoreline, the highway dips southeast, now parallel to the Nisqually River, into Fort Lewis and the Nisqually Indian Community. Outside of the community, SR 510 is renamed the Yelm Highway and passes Southworth Elementary. After intersecting Mudd Run Road, future western terminus of the Yelm Loop, the roadway enters Yelm city limits. After turning southeast, SR 510 becomes Yelm Avenue and serves Yelm High School. Shortly thereafter, the roadway serves Yelm Middle School, crosses the Yelm-Tenino Trail, a long rail trail in operation since 1993, and ends at First Street, signed as , which continues southeast as Yelm Avenue.
 Links: a. Lacey, Washington b. South Puget Sound Community College c. Nisqually Reservation d. Railroad Track
Example Output:
a