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 was older the year Culberson signed with the Dodgers, Dave Roberts or Boone Logan? Passage:Culberson was signed by the Dodgers in November 2015 and invited to spring training, where he impressed new Dodgers manager Dave Roberts. After an injury to Howie Kendrick opened a spot for him, Culberson made the Dodgers 2016 Opening Day roster. He was designated for assignment in July and optioned to the Oklahoma City Dodgers, then recalled a month later. Culberson ended the big club's final home game of the season with a walk-off home run against former Rockies teammate Boone Logan, clinching the Dodgers' fourth consecutive National League West division title. He played in 34 games for Los Angeles, hitting .284 and in 70 games for Oklahoma City, hitting .260. He had no hits in seven at-bats with two strikeouts in the 2016 National League Division Series. He was outrighted to the minors and removed from the 40-man roster on December 9, 2016. He was assigned to Oklahoma City to begin the season. He remained in the minors for the conclusion of the AAA season, hitting .250 in 108 games and returned to the majors with the Dodgers on September 4. In 15 games for the Dodgers, he hit .154 with two hits in 13 at-bats. When starting shortstop Corey Seager was left off of the 2017 NLCS roster because of a back injury, Culberson was added to the post-season roster. He appeared in all five games of the series, with five hits in 11 at-bats for a .455 average. In the 2017 World Series, Culberson had three hits in five at-bats, including his first career post-season home run, which he hit off Chris Devenski of the Houston Astros in the 11th inning of Game Two.
 Links: a. Dave Roberts (outfielder) b. Houston Astros c. Houston Astros d. Boone Logan
Example Output: d

Example Input: Question: How many regular NHL seasons had there been before the 1999-2000 hockey season? Passage:Before the 1999–2000 NHL season Torchetti was hired as an assistant coach for the Tampa Bay Lightning under Steve Ludzik. In 2002 Torchetti was hired as head coach of the San Antonio Rampage. Due to his many coaching stints in the city, "Torch" has kept close ties to San Antonio. After 65 games he was promoted to assistant coach with the parent club, the Florida Panthers. In 2004, he served 27 games as interim head coach, replacing Rick Dudley. He finished with a 10–12–4–1 record before being replaced by Jacques Martin. During the 2005–06 NHL season, Torchetti was hired by Dave Taylor as interim head coach of the Los Angeles Kings. With a chance to clinch a playoff spot, he had a 5–7 record in the team's final 12 games and was not retained by the Kings, instead being replaced by Marc Crawford.
 Links: a. 1999–2000 NHL season b. 1999–2000 NHL season c. Florida Panthers d. 2005–06 NHL season
Example Output: a

Example Input: Question: What position did Norvell play in college? Passage:Merritt James Norvell III (born March 28, 1963) is an American college football coach and former player. He is head football coach at the University of Nevada, Reno, a position he has held since the 2017 season. Norvell played at the college football at the University of Iowa from 1982 to 1985 and professionally in National Football League (NFL) with the Chicago Bears for one season, in 1987. Norvell served as the offensive coordinator for Nebraska (2004–2006) and UCLA (2007). At Nebraska he helped guide quarterback Zac Taylor to win Big 12 Offensive Player of the Year honors and break several school passing records. Norvell was the co-offensive coordinator and wide receivers coach at the University of Oklahoma from December 2010 to January 2015. He was previously the wide receivers coach at the University of Texas. In February 2016, he was announced as the new wide receivers coach and passing game coordinator at Arizona State. Norvell had play calling duties for the Texas Longhorns in 2015.
 Links: a. College football b. University of Texas at Austin c. College football d. Nebraska Cornhuskers football
Example Output:
a