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: What version of iOS was current the year Bejeweled 2 was released on the platform? Passage:Bejeweled 2 is a tile-matching puzzle video game. The sequel to Bejeweled, it was developed and published by PopCap Games. In 2004, Bejeweled 2 Deluxe was released, which includes extra game modes and features. Bejeweled 2 Deluxe was released for the Xbox 360 as a downloadable Xbox Live Arcade game on November 22, 2005. In 2007, the game was released on the PlayStation 2 alongside another PopCap game, AstroPop as a two-game compilation pack as PopCap Hits! Volume 1. PopCap also released a version for iOS in 2008. Bejeweled 2 was also released for PlayStation 3 on the PlayStation Network on January 29, 2009, on the Wii via WiiWare on June 14, 2010, and on PlayStation Portable on June 29, 2010, and for Android. As with the original Bejeweled, Bejeweled 2 is based on the Shariki game mechanic.
Links: a. Xbox Live Arcade b. Shariki c. Ios d. PlayStation 3
Example Output: c

Example Input: Question: Which series hosted by the track was founded the earliest? Passage:Talladega Superspeedway, originally known as Alabama International Motor Superspeedway (AIMS), is a motorsports complex located north of Talladega, Alabama. It is located on the former Anniston Air Force Base in the small city of Lincoln. The track is a tri-oval and was constructed in the 1960s by the International Speedway Corporation, a business controlled by the France Family. Talladega is most known for its steep banking and the unique location of the start/finish line that's located just past the exit to pit road. The track currently hosts the NASCAR series such as the Sprint Cup Series, Xfinity Series and the Camping World Truck Series. Talladega is the longest NASCAR oval with a length of tri-oval like the Daytona International Speedway, which also is a tri-oval.
Links: a. NASCAR b. NASCAR Gander RV & Outdoors Truck Series c. Talladega, Alabama d. Daytona International Speedway
Example Output: b

Example Input: Question: Where was Sale's first husband born? Passage:On June 21, 2012, Simpson married Canadian figure skater Jamie Sale, whom he had "known for years from the Edmonton skating scene". They had been paired as partners in late 2009 for the first season of the CBC show Battle of the Blades, which they won. Simpson and Sale have one daughter, Samantha Rae Simpson, born on July 7, 2013. Through this marriage, Simpson is also a stepfather to Sale's son Jesse Pelletier (born September 30, 2007), from her first marriage to skating partner David Pelletier. He also has three children from a previous marriage, including son Dillon, who was drafted by the Edmonton Oilers in the 4th round of the 2011 NHL Entry Draft and is currently a defenseman for the Bakersfield Condors.
Links: a. David Pelletier b. Canadian Broadcasting Corporation c. David Pelletier d. Battle of the Blades (season 1)
Example Output:
a