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 Q]: Question: In which country is the seaport city of Porto located where the wine received its name "port"? Passage:Port is produced from grapes grown and processed in the demarcated Douro region. The wine produced is then fortified by the addition of a neutral grape spirit known as aguardente to stop the fermentation, leaving residual sugar in the wine, and to boost the alcohol content. The fortification spirit is sometimes referred to as brandy but it bears little resemblance to commercial brandies. The wine is then stored and aged, often in barrels stored in a Lodge (meaning "cellar") as is the case in Vila Nova de Gaia, before being bottled. The wine received its name, "port", in the later half of the 17th century from the seaport city of Porto at the mouth of the Douro River, where much of the product was brought to market or for export to other countries in Europe. The Douro valley where port wine is produced was defined and established as a protected region, and the name Douro thus an official appellation, in 1756, making it the third oldest, after Chianti (1716) and Tokaj (1730).
Links: a. Barrel b. Tokaji c. Vila Nova de Gaia d. Porto
[EX A]: d

[EX Q]: Question: Who was older when Heitler obtained his doctorate, Arnold Sommerfeld or Karl Herzfeld? Passage:In 1922, Heitler began his study of physics at the Karlsruhe Technische Hochschule, in 1923 at the Humboldt University of Berlin, and in 1924 at the Ludwig Maximilian University of Munich (LMU), where he studied under both Arnold Sommerfeld and Karl Herzfeld. The latter was his thesis advisor when he obtained his doctorate in 1926; Herzfeld taught courses in theoretical physics and one in physical chemistry, and in Sommerfeld's absence often took over his classes. From 1926 to 1927, he was a Rockefeller Foundation Fellow for postgraduate research with Niels Bohr at the Institute for Theoretical Physics at the University of Copenhagen and with Erwin Schrodinger at the University of Zurich. He then became an assistant to Max Born at the Institute for Theoretical Physics at the University of Gottingen. Heitler completed his Habilitation, under Born, in 1929, and then remained as a Privatdozent until 1933. In that year, he was let go by the university because he was Jewish.
Links: a. University of Gottingen b. Ludwig Maximilian University of Munich c. Arnold Sommerfeld d. Arnold Sommerfeld
[EX A]: c

[EX Q]: Question: How many league championships have been won between the two teams that Pijper raced for in 2008? Passage:Born in Dokkum, Netherlands, Pijper first rode a motorbike at the age of five. He was a successful long track rider before starting his speedway career. He made his debut in British speedway in 2002 with Edinburgh Monarchs, staying with the team until 2007 in a spell that included a Premier League title in 2003. In 2004 he won the European Grasstrack Championship at Eenrum. In 2007 he moved up to the Elite League with Wolverhampton Wolves, but after losing his place in the team returned to the Monarchs for a short spell, later moving to Berwick Bandits. He lost his team place once again, but later that season won the European Grasstrack Championship for a second time. He joined Elite League team Swindon Robins in 2008, but lost his place in June, going on to a spell with Mildenhall Fen Tigers in the Premier League. He returned to British speedway in 2011 with Glasgow Tigers, with whom he won the Premier League in both 2011 and 2012, and also signed with Elite League Birmingham Brummies as their number eight. In 2012 he returned to the Edinburgh Monarchs team, and was part of the 2013 Premier League Four-Team Championship winning team. In 2018 he signed to ride for the Redcar Bears
Links: a. Wolverhampton Wolves b. Elite League (speedway) c. Swindon Robins d. Glasgow Tigers (speedway)
[EX A]:
c