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 many people did Arnstadt command as a company commander of the 6th border company in Dermbach? Passage:In June 1949, Arnstadt registered for service with the Volkspolizei, the police force of the Soviet Occupation Zone, becoming an Anwärter der VP (police cadet) with the Kasernierte Volkspolizei in Gotha. In March 1950, Arnstadt was appointed to the German Border Police (Deutsche Grenzpolizei) in Dermbach, patrolling the Inner German border with West Germany. In 1952, Arnstadt failed his first attempt to become an officer at the police school in Sondershausen. In 1953, his marriage ended in divorce, with his two children Veronika and Uwe staying with the mother, and remarried shortly after. In 1954, Arnstadt passed his officer training at Sondershausen and was appointed the rank of Unterleutnant, and the following year was promoted to lieutenant. Arnstadt functioned as a recruiter for the German Border Police until 1957 when he was appointed as a company commander of the 6th border company in Dermbach. Arnstadt was responsible for a section of the border at Wiesenfeld, a region of Bezirk Suhl in the Rhön Mountains at the westernmost point of the Warsaw Pact. Arnstadt's section contained the highly-strategic Fulda Gap, which aroused the special interest of NATO, and a short distance from the US Army's Observation Post Alpha. Arnstadt moved with his wife to Wiesenfeld and in April 1957 became an unofficial collaborator (Geheimer Informator) of the Ministry for State Security (Stasi) until this relationship was ended fourteen months later. 
 Links: a. Company commander b. Inner German border c. Dermbach d. Kasernierte Volkspolizei

Output: a


Input: Consider Input: Question: What album was the song "Ignorance" released from? Passage:The Honda Civic tour was the biggest production the band had had so far. The stage was constructed of 3 ramps up to a platform behind the drum set, and 6 large video screens behind that. The show began with a large black curtain concealing the stage while the band played an instrumental intro, with spotlights revealing the silhouettes of the band. As the intro ended, they begin playing "Ignorance" as the curtain simultaneously dropped, the video screens flashing the band's logo during the intro, as the intro progressed the video screen changed to images of light bulbs (similar to the song's music video) during the intro, light bulbs also swung down from the top of the stage, continuing to swing throughout the song. The band then played "Feeling Sorry" as the video screens each showed a live feed of each member of the band performing during the choruses, at the end of the bridge the band would stop playing and Hayley would greet the crowd and welcome them to the tour. After playing "That's What You Get" and "Emergency" the band played "Playing God" as the video screens showed images of picture frames, the same picture frames on the back of Brand New Eyes and the song's single cover. After that they played Careful, as images of the Brand New Eyes butterfly flashed during the chorus, they then continued with their hit-single "Decode" as the video screen showed the band running through the forest with fireworks and flares, the video has been described as a part-two to the songs music video. After that Hayley Williams and Josh Farro moved to stage left and performed an acoustic cover of Loretta Lynn's "You Ain't Women Enough." After that, a red couch (similar to the one on the cover of All We Know is Falling) and a small lamp were brought out and the band performed a three song acoustic set, during this the light bulbs from Ignorance were brought down again to illuminate the stage. After that the band returned with "Let the Flames Begin" while the video screens showed images of open hands during the 'Oh Father' outro. They then performed "Crushcrushcrush" and "Pressure " stopping in the bridge during "Pressure" for Hayley to introduce all the band members, and for Josh to introduce Hayley. They then performed "Looking Up" while each of the video screens showed lyrics to the song and each of the band members daily lives, at the end of the song all the members came together to ride bikes as the split-screens faded away. They then ended their main set with their biggest hit "The Only Exception" as pyrotechnics were used during the last chorus of the song. The band then exited and come back for an encore, starting with "Brick By Boring Brick" while the video screens showed various images, including deserts, snakes, the Brand New Eyes butterfly, and hot air balloons. After "Brick" the band concluded their set with their breakthrough song "Misery Business" as flashing images of the "Riot!" logo filled the video screens, during the bridge Williams would let one, or sometimes various fans on stage to sing the rest of the song or sometimes play guitar, and as the last chorus came in confetti cannons were shot towards the crowd. The set concluded with the video screen showing Paramore's logo and the band bowing then leaving the stage. They used the same production for their Oceania and UK tours.
 Links: a. Decode (song) b. The Only Exception c. Ignorance (song) d. Riot!

Output: c


Input: Consider Input: Question: What shape or object is the type of bell opening of the tower named after? Passage:The church is constructed in punch-dressed sandstone ashlar, and has slate roofs with inserted skylight windows. Its architectural style is Early English. The plan consists of a four-bay nave without aisles, a two-bay chancel with a north chapel and a south vestry, and a west tower. The tower is in three stages, with clasping buttresses, and contains paired west doorways, a clock face in a diamond-shaped surround, and pairs of louvred bell openings. At the top of the tower is an embattled parapet with octagonal corner pinnacles, and there are more pinnacles at the angles of the nave. The bays of the nave are separated by buttresses, and each bay contains a corbel-table and a pair of lancet windows. The sides of the chancel also contain paired lancet windows, and the east window consists of a triple stepped lancet in a blank arch. The north chapel is gabled, and contains a wheel window. The interior has been remodelled, but originally it contained a three-sided gallery on cast iron columns.
 Links: a. Nave b. Louver c. Ashlar d. Louver


Output: b