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: Did The Black Eyed Peas album The E.N.D. have other singles that made the charts? Passage:On 16 June 2009, The Black Eyed Peas released the Guetta-produced "I Gotta Feeling" as their second single from their fifth studio album, The E.N.D.. It became a worldwide hit topping the charts in seventeen countries. It became the most downloaded song of all-time in the United States with almost 7.5 million downloads and in the United Kingdom selling more than 1 million copies. He was nominated twice for his work with The Black Eyed Peas at the 52nd Grammy Awards; in the category Record of the Year for "I Gotta Feeling" and Album of the Year for their album The E.N.D.. In 2010, Guetta co-wrote and produced Kelly Rowland's "Commander" from her third album Here I Am. It peaked at number one on Billboard's Hot Dance Club Songs chart in the United States, and reached top ten positions in Belgium and the United Kingdom. Guetta has also co-produced "Forever and a Day", which was Kelly's next UK single from that album. Guetta also produced the singles "Acapella" and "Scream" for American singer-songwriter Kelis's fifth studio album, Flesh Tone, released on 14 May 2010. "Acapella" was released as the lead single on 23 February 2010 and topped the dance charts in the United Kingdom and United States. On 28 June 2010 American rapper Flo Rida released the single "Club Can't Handle Me" featuring Guetta. The song is included on the soundtrack album to the American 3D dance film Step Up 3D and Flo Rida's third studio album, Only One Flo (Part 1).
Links: a. Step Up 3D (soundtrack) b. Kelis c. Dance Club Songs d. The Black Eyed Peas

Output: d

Input: Consider Input: Question: How high is the gamma radiation from nuclear fuel? Passage:The nuclear fuel elements were made of refractory ceramic based on beryllium oxide, with enriched uranium dioxide as fuel and small amount of zirconium dioxide for structural stability. The fuel elements were hollow hexagonal tubes about long with distance between the outer parallel planes, with inside diameter of . They were manufactured by high-pressure extruding of the green compact, then sintering almost to its theoretical density. The core consisted of 465,000 individual elements stacked to form 27,000 airflow channels; the design with small unattached elements reduced problems related with thermal stresses. The elements were designed for average operation temperature of ; the autoignition temperature of the reactor base plates was only 150C higher. The neutron flux was calculated to be 910 neutrons/(cms) in the aft and 710 neutrons/(cms) in the nose. The gamma radiation level was fairly high due to the lack of shielding; radiation hardening for the guidance electronics had to be designed.
Links: a. Beryllium oxide b. Radiation hardening c. Nuclear fuel d. Radiation hardening

Output: c

Input: Consider Input: Question: What city and state did Grouplove travel to in order to perform at the Bonnaroo Music and Arts Festival? 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. Sasquatch! Music Festival b. Nationals (Glee) c. Sydney d. Bonnaroo Music Festival
Output: d