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 the founder of the record company that signed Funkadelic? Passage:By 1970, the five Parliaments singers were touring with five backing musicians known separately as Funkadelic. The highly rehearsed performances and suited look of The Parliaments gave way to the members dressing in their own outrageous styles. Haskins wore long johns on stage. Due to the contractual issues surrounding the group name, Clinton signed the band as Funkadelic to Westbound Records. The ensemble released their first album Funkadelic in 1970. Clinton also renamed his group of singers Parliament (but still with the Funkadelic musicians as official members) and signed that act to the Holland-Dozier-Holland-owned record label, Invictus. Parliament released their first album Osmium in 1970. Clinton now had two groups that were actually one entity. Under the name Funkadelic, the ensemble was geared towards a rock audience, and as Parliament it was aimed at a soul music audience. Collectively, they became known as Parliament-Funkadelic, or P-Funk. Haskins contributed to P-Funk as a writer through 1972. He toured and appeared on P-Funk albums as a singer, and occasionally as a guitarist, throughout the 1970s. In June 1977 at the height of P-Funk's popularity, Haskins (along with other original Parliaments Calvin Simon and Grady Thomas) left the ensemble over financial and management disputes with Clinton.
Links: a. Osmium (album) b. Long underwear c. Westbound Records d. Parliament (band)
Example Output: c

Example Input: Question: Which is the oldest city that borders Garden Grove? Passage:West Grove, officially recognized as the West Grove Business District by the City of Garden Grove, and sometimes called West Garden Grove, is a neighborhood in the city of Garden Grove, located in Orange County, California, United States. West Grove encompasses the pene-exclave western portion of the city of Garden Grove. It is bordered to the north by Cypress, to the west by Los Alamitos and Seal Beach, to the south by Westminster, and to the east by Stanton, and connected to the rest of Garden Grove by a narrow strip along Garden Grove Boulevard. It includes the entire 92845 ZIP Code, which is designated as the areas west of Knott Avenue to the Seal Beach and Los Alamitos city borders, and the industrial area east of Knott Avenue to the Stanton border. The community is more "affluent" than the rest of Garden Grove, with a median income $25,000 greater than the main body of the city. There is also less crime, a lower poverty rate, and the population density is lower compared to the rest of Garden Grove. As of the 2010 Census, 16,333 people reside in West Grove.
Links: a. Orange County, California b. Cypress, California c. Garden Grove, California d. Garden Grove, California
Example Output: b

Example Input: 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
Example Output:
d