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: Did the highest scoring fighter ace have any siblings? Passage:After a short rest, the 90th continued across the Moselle River to take Mainz, 22 March, and crossed the rivers Rhine, the Main, and the Werra in rapid succession. Pursuit continued to the Czech border, 18 April 1945, and into the Sudetes mountain range. The division was en route to Prague when they came upon the remaining 1500 emaciated prisoners left behind by the SS at Flossenbürg concentration camp. Today, a memorial wall at the former camp honors the 90th as the liberators of Flossenbürg concentration camp. A week later, word came that the war in Europe ended on 8 May 1945. On that same day, Erich Hartmann, the highest-scoring fighter ace in history, along with a squadron of the elite Jagdgeschwader 52 fighter wing (the highest-scoring fighter wing in history), surrendered to the 90th.
 Links: a. Main (river) b. Jagdgeschwader 52 c. Prague d. Erich Hartmann

Ex Output:
d


Ex 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

Ex Output:
b


Ex Input:
Question: Which state did Grouplove perform in December before their sold-out headline tour in Australia? Passage:The band released its debut album, Never Trust a Happy Song, on September 13, 2011 through Canvasback/Atlantic Records. They released 4 singles from the album – Colours (which was featured on FIFA 12, albeit as the Captain Cuts remix), "Tongue Tied" (which went on to score the band a no. 1 on the US Alternative Chart and featured in several commercials (including one for Apple, and one for Coca-Cola) and an episode of Fox's Glee) Lovely Cup and Itchin On A Photograph. In support of their debut album, the band went on a headlining North American Fall tour and also performed with Two Door Cinema Club as their main support. In December, the band performed at KROQ Almost Acoustic Christmas, which takes place at the Gibson Amphitheatre, in Universal City. On January 3, 2012 the band kicked off their sold-out headline tour in Australia at the Factory Theatre in Sydney and continued their tour in Europe in February. The band began their US Spring 2012 tour on March 6 in Burlington, VT in support of Young The Giant. Throughout the sold-out headline tour the band had featured stops at Coachella Valley Music and Arts Festival, Sasquatch! Music Festival, and Bonnaroo Music and Arts Festival.
 Links: a. Nationals (Glee) b. Coachella Valley Music and Arts Festival c. Sydney d. Universal City, California

Ex Output:

d