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: Who other than Woldenga has been awarded the Knights cross of the Iron Cross? Passage:Woldenga's career started as a captain in the merchant marine. He started his flight training in 1928 and worked as chief pilot for the FVK Warnemünde. He transferred to the newly emerging Luftwaffe, taking command as Gruppenkommandeur of the I./Jagdgeschwader 131 (JG 131) — later renamed to I./Jagdgeschwader 1 (JG 1) — on 1 April 1937. With this unit he participated in the invasion of Poland in 1939. He surrender command of the Gruppe on 1 February 1940 and was transferred to the Reichsluftfahrtministerium. He briefly led Jagdgeschwader 27 (JG 27) on the Channel Front from 11 October to 22 October 1940 before he was made Geschwaderkommodore of Jagdgeschwader 77 (JG 77). Under this command, JG 77 participated in the Balkans Campaign and invasion of Crete. JG 77 claimed 50 aerial victories. Woldenga received the Knight's Cross of the Iron Cross. He commanded of JG 27 on 21 June 1941 during the invasion of the Soviet Union and claimed 4 aerial victories. He relocated the Geschwaderstab to North Africa in December 1941. He was appointed Fliegerführer Balkan on 10 June 1942. His last service position of the war was commander of the Luftkriegschule 10 in Fürstenwalde near Berlin. He is credited with three aerial victories of which two were claimed on the Eastern Front.
 Links: a. Knight's Cross of the Iron Cross b. Fürstenwalde c. Fürstenwalde d. Jagdgeschwader 77
Example Output: a

Example Input: Question: How many total teams participated in the cup the team won in 2017? Passage:From their foundation, the team primarily played five, seven and eleven-a-side exhibition matches, which were filmed and uploaded to their YouTube channel. By September 2016, the team's Instagram account had over 100,000 followers, their Twitter account 41,000, and a 'penalty challenge' video uploaded to YouTube had accumulated over one million views. Hashtag United played various teams including a Comedians XI whom they beat 19–1, Google, the GB Deaf Team, Barawa and a Manchester City staff team, with opponents fielding former professional footballers such as Paul Dickov, Graeme Le Saux and Ray Parlour, and celebrities including Omid Djalili. At one point in 2016, the club was close to signing professional footballer Adebayo Akinfenwa. In 2017 the club won the EE Wembley Cup, a competition that Spencer FC had won in 2015 and 2016; the team included Scott Pollock, who went on to sign professional terms with Northampton Town. 
 Links: a. Graeme Le Saux b. EE Wembley Cup c. Exhibition game d. Twitter
Example Output: b

Example Input: Question: What country produces the most of the material used for the church's dressings? Passage:St Nicholas is constructed in flint, with some conglomerate and brick, and has limestone dressings. The roofs are tiled. Its plan consists of a nave, a chancel with a north vestry (previously a porch), and a west tower. The tower is wholly octagonal. In each face of the upper stage of the tower is a lancet, and there is another lancet on the west side at a lower level. The parapet is battlemented. The tower has a west doorway in Norman style, which has possibly been re-set from elsewhere in the church. It has scalloped capitals, and zig-zag decoration on the arch. Inside the upper part of the tower is a 17th-century dovecote lined with brick nesting boxes. On the south side, between the tower and the nave, is a brick stair turret. The nave windows have two lights with Decorated tracery. Between the windows on the south side is another Norman doorway, again with zig-zag decoration. The north and south walls of the chancel have two-light windows with Y-tracery, and three-light windows with Perpendicular tracery. The east window has five lights. The east gable is decorated with grotesque carvings, and above the east window is head-corbel and a blocked niche. The vestry has two-light north and south windows. In the north wall of the nave is an Early English doorway, with dog-tooth ornament. Around the church are stepped buttresses.
 Links: a. Vestry b. Gable c. Limestone d. Nave
Example Output:
c