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: Which episode with Malohkeh had the highest ratings? Passage:Chibnall suggested including a "bonkers" gang of characters picked from around time and space. He felt that Doctor Who could have "collisions of characters that no other show in the world can do", and that it was about finding a "disparate" group of characters who would "bounce" off each other. Nefertiti's decision not to return to her own time fits in with the historical record, as the date and cause of her death are unknown. Chibnall asked to introduce Rory's father, as Amy and Rory would be leaving in four episodes and Rory's family life had not been explored yet. Mark Williams who played Rory's father previously appeared in the Fifth Doctor audio adventure The Eternal Summer. Rupert Graves, who played an Edwardian hunter in this episode, previously worked with Moffat on the BBC series Sherlock. David Bradley's character, Solomon, was modelled on a "well-known nightclub owner with long hair". Chibnall described him as "half businessman, half Somali pirate". Bradley and Williams had previously worked together on the Harry Potter film franchise. Bradley was later cast as the First Doctor William Hartnell for the 50th anniversary documentary drama An Adventure in Space and Time. Comedy duo Mitchell and Webb provided the voices of Solomon's two robots; executive producer Caroline Skinner called the casting choice "perfect". Richard Hope, who played the Silurian Bleytal, previously appeared as Malohkeh in the episodes "The Hungry Earth", "Cold Blood" and "The Wedding of River Song".
 Links: a. Richard Hope (actor) b. The Hungry Earth c. Mitchell and Webb d. Harry Potter (film series)

Output: b


Input: Consider Input: Question: Which PC operating environment sold more from Microsoft? Passage:Due to the sales growth of IBM clones in the '90s, they became the industry standard for business and home use. This growth was augmented by the introduction of Microsoft's Windows 3.0 operating environment in 1990, and followed by Windows 3.1 in 1992 and the Windows 95 operating system in 1995. The Macintosh was sent into a period of decline by these developments coupled with Apple's own inability to come up with a successor to the Macintosh operating system, and by 1996 Apple was almost bankrupt. In December 1996 Apple bought NeXT and in what has been described as a "reverse takeover", Steve Jobs returned to Apple in 1997. The NeXT purchase and Jobs' return brought Apple back to profitability, first with the release of Mac OS 8, a major new version of the operating system for Macintosh computers, and then with the PowerMac G3 and iMac computers for the professional and home markets. The iMac was notable for its transparent bondi blue casing in an ergonomic shape, as well as its discarding of legacy devices such as a floppy drive and serial ports in favor of Ethernet and USB connectivity. The iMac sold several million units and a subsequent model using a different form factor remains in production as of August 2017. In 2001 Mac OS X, the long-awaited "next generation" Mac OS based on the NeXT technologies was finally introduced by Apple, cementing its comeback.
 Links: a. USB b. Windows 3.0 c. Mac OS 8 d. Power Macintosh G3

Output: b


Input: Consider Input: Question: Which professional team did the team captain of the 2008 Olympics U.S. Men's Basketball team play for? Passage:The 2008 Olympics U.S. Men's Basketball Team represented the United States of America at the 2008 Summer Olympics in Beijing, China. They qualified for the Olympics by winning the FIBA American Championships 2007 held in Las Vegas, Nevada. The team was nicknamed the "Redeem Team", a play on an alternative name for the legendary 1992 squad that was called the "Dream Team", and a reference to the fact that the United States came away with disappointing Bronze Medals during the 2004 Summer Olympics and the 2006 FIBA World Championship. Kobe Bryant was named the team captain and Mike Krzyzewski was named the head coach of the 2008 team. LeBron James, called the "voice of the U.S. team" by Time, stated: "It's the gold, or it's failure." An ESPN program, Road to Redemption, followed the team's preparations.
 Links: a. Kobe Bryant b. 2007 FIBA Americas Championship c. Basketball at the 2004 Summer Olympics d. 2006 FIBA World Championship


Output: a