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: What was the real name of the wrestler Buffalo defeated in order to win his first title in Osaka Pro? Passage:In April 1999, Yamada joined the Osaka Pro Wrestling promotion, where he began wrestling under a mask as Black Buffalo, a character inspired by the Osaka Kintetsu Buffaloes baseball team. He made his debut for the promotion at its first event on April 29, where he, Dick Togo and Violencia, forming the villainous alliance Legion of Violence (LOV), were defeated in a six-man tag team main event by Masato Yakushiji, Naohiro Hoshikawa and Super Delfin. Buffalo kept teaming with Togo for the rest of the year. On November 21, Buffalo won his first title in Osaka Pro, when he defeated Super Delfin for the UWF Super Welterweight Championship, only to lose it back to him seven days later. In early 2000, LOV was joined by Daio Quallt and Policeme~n, replacing Violencia. On May 1, Buffalo and Togo defeated Super Delfin and Super Demekin in the finals to win the 1st Anniversary Tag Tournament. In September, Buffalo took part in the inaugural Tenno-zan tournament, where he made it to the semifinals, before being eliminated by Super Delfin. After Dick Togo left Osaka Pro at the end of 2000, LOV was disbanded and replaced by the new group, FLUXxx, as a member of which Buffalo formed a new tag team named Infinity with Tsubasa. After reaching the semifinals of the 2001 Osaka Tag Festival, Buffalo and Tsubasa defeated Super Delfin and Takehiro Murahama on July 21 to win the vacant Osaka Pro Wrestling Tag Team Championship. They would lose the title to Murahama and Kaiju Zeta Mandora on August 24. The following October's Tenno-zan saw a repeat of the previous year's tournament as Buffalo was eliminated in the semifinals by Super Delfin. On January 27, 2002, Buffalo, Tsubasa and Gamma defeated Super Delfin, Super Demekin and Takehiro Murahama to win the Trios Cup Tournament. On August 25, Buffalo and Tsubasa regained the Osaka Pro Wrestling Tag Team Championship by defeating the Kishiwada Gurentai (Big Boss MA-G-MA and Daio Quallt). After a five-month reign, they would lose the title to Jyushin Thunder Liger and Takehiro Murahama on February 1, 2003.
Links: a. Magnitude Kishiwada b. Super Delfin c. Super Delfin d. Super Delfin

Ex Output:
b

Ex Input:
Question: What was the time span between the release of Nue Propriete and Private Lessons? Passage:Lafosse studied at the IAD (Institut des arts de diffusion) at Louvain-la-Neuve between 1997 and 2001. His graduation film Tribu, a 24-minute short, won the best Belgian short subject category at the 2001 Namur Film Festival. His first full-length feature, Folie Privee (2004), won the FIPRESCI award at the Bratislava International Film Festival., and the semi-autobiographical Ca rend heureux (2006) took the Grand Prix at the 2007 Premiers Plans d'Angers festival. 2006 also saw the release of Nue Propriete, starring Isabelle Huppert and brothers Jeremie and Yannick Renier, which debuted at the Venice Film Festival where it was nominated for the Golden Lion and won a SIGNIS award. The film received the Andre Cavens Award for Best Film by the Belgian Film Critics Association (UCC). For his film Private Lessons (Eleve libre), he was nominated for two Magritte Awards in the category of Best Director and Best Screenplay.
Links: a. Jeremie Renier b. 63rd Venice International Film Festival c. Golden Lion d. Private Lessons (2008 film)

Ex Output:
d

Ex Input:
Question: Do people still use the Castilian language? Passage:In 1479, the Lord of Bearn, Francis Phoebus, inherited the Kingdom of Navarre, across the Pyrenees to the southwest. The two sovereign principalities remained in personal union until their extinction. Bearn went on to be ruled by Henry II of Navarre, who inherited it from his mother. In 1512, the Kingdom of Navarre was almost entirely occupied by Spain; only Lower Navarre, north of the Pyrenees escaped Spanish permanent occupation. The Bearnese monarchs extended the use of Occitan to Navarre after 1512, despite the fact that it was not the vernacular there, where Basque was the tongue of the people. The Estates of Navarre convoked in 1522 (or in 1523, according to other sources) kept records in Occitan, as did the Chancery of Navarre created in 1524. When Henry II revised the Fueros of Navarre in 1530, he had them translated from Castilian into Occitan.
Links: a. Personal union b. Old Spanish language c. Old Spanish language d. Pyrenees

Ex Output:
b