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: What city did Empire Nightingale arrive in on July 1? Passage:Empire Nightingale would appear to have crossed the Atlantic Ocean from the United States independently, as she does not appear as a member of a convoy until 27 June, when she departed Middlesbrough, Yorkshire as a member of Convoy EC 31. The convoy had departed from Southend, Essex the previous day and arrived at the Clyde on 1 July. She left the convoy at Oban, Argyllshire, departing on 3 July for Baltimore, Maryland, United States, which was reached on 22 July. Empire Nightingale departed Baltimore on 10 August for Halifax, Nova Scotia, Canada, arriving five days later. Carrying a cargo of steel, she departed on 21 August with Convoy HX 146, which arrived at Liverpool, Lancashire on 6 September. She left the convoy at Loch Ewe to join Convoy WN 177, which departed from Oban on 5 September and arrived at Methil, Fife on 8 September. Empire Nightingale then joined Convoy FS 589, which departed that day and arrived at Southend on 10 September. She left the convoy at Hull, Yorkshire on 10 September.
Links: a. Halifax, Nova Scotia b. River Clyde c. Southend-on-Sea d. Southend-on-Sea
Example Output: b

Example Input: Question: Where was the person born who directed Aeon Flux? Passage:The screenplay was written by Phil Hay and Matt Manfredi, and directed by Karyn Kusama. It was based on the animated TV series by Peter Chung, who had a minor role in this film version of his work. In the early stages of production, actress Michelle Rodriguez was considered for the part of on. She had previously worked with Kusama in Girlfight. Kusama had originally suggested filming in Brasilia, the capital of Brazil, because the 20th-century modern architecture of that city fit with her vision of Bregna. The producers rejected the idea because Brasilia lacked the infrastructure and technical expertise to support a major film production. After several cities were scouted, Berlin and Potsdam in Germany were chosen for filming. Berlin had several locations that fit into the organic yet structured world of on Flux. The crew gained permission to film in several locations that had never allowed such access before, including the Treptow Crematorium, the Adlershof Trudelturm and Windkanal wind tunnel facility, and the Haus der Kulturen der Welt ("House of the World's Cultures"). Additional locations included the Bauhaus Archive and a dissection theatre built in 1790 to train veterinarians, part of the Berlin animal shelter. It was used as the Handler space. Filming was temporarily suspended for a month during September 2004 while Theron recovered from a neck injury she sustained during stunt-work on the tenth day of shooting. She was hospitalized in Berlin for five days and required about six weeks of physiotherapy to recover.
Links: a. Wind tunnel b. Matt Manfredi c. Bauhaus Archive d. Karyn Kusama
Example Output: d

Example Input: Question: How long were Luis Miguel and Mariah Carey in a relationship? Passage:When the song was first released as a single in 1994, no remixes were commissioned. Carey re-released the song commercially in Japan in 2000, with a new remix known as the So So Def remix. The remix contains new vocals and is played over a harder, more urban beat that contains a sample of Afrika Bambaataa & the Soulsonic Force's "Planet Rock;" it features guest vocals by Jermaine Dupri and Bow Wow. The remix appears on Carey's compilation album Greatest Hits (2001) as a bonus track. A video was created for the So So Def remix, but it does not feature Carey or the hip-hop musicians that perform in the song. Instead, the video is animated and based on a scene in the video from Carey's "Heartbreaker" (1999). It features cartoon cameo appearances by Carey, Jermaine Dupri, Bow Wow, Luis Miguel (Carey's boyfriend at the time), Carey's dog Jack, and Santa Claus. In 2009 and 2010, the song was included in a music video accompanying ESPN's (and their sister station, ABC) Christmas Day coverage of the NBA.
Links: a. Luis Miguel b. Afrika Bambaataa c. So So Def Recordings d. Jermaine Dupri
Example Output:
a