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: In what modern day countries did the band of nomads  who visited the Hami Desert live? Passage:Beyond an occasional visit from a band of nomad Mongols, this region of the Pe-shan swelling is entirely uninhabited. And yet it was from this region, according to Grigory Grum-Grshimailo (1889-1890 explorer), that the Yue-chi (Yuezhi), a nomadic people akin to the Tibetans, proceeded when, towards the middle of the 2nd century BC, they moved westwards and settled near Lake Issyk-kul; and from here proceeded also the Shanshani, or people who some two thousand years ago founded the state of Shanshan or Lofi-lan. The ruins of this town were discovered by Sven Hedin in the desert of Lop in 1901. Here, says the Russian explorer, the Huns gathered strength, as also did the Turks (Ch. Tukiu) in the 6th century, and the Uighur tribes and the rulers of the Tangut kingdom. But after Genghis Khan, in the 12th century, drew away the peoples of this region, and no others came to take their place, the country went out of cultivation and eventually became the barren desert it is now. During the Hun time, and probably into the Middle Ages, the present desert was a lush steppe grassland able to support sustainable seasonal nomadic horse husbandry on a large scale.
 Links: a. Shanshan b. Shanshan c. Mongols d. Issyk-Kul
Example Output: c

Example Input: Question: What was the first award that Iron Maiden received from the Metal Hammer Golden Gods Awards? Passage:In 1994, one of their singles, "Fear of the Dark", received a Grammy nomination for Best Metal Performance. Seven years later, the band were nominated again in that category, with the song "The Wicker Man". In 2011, Iron Maiden won the award with "El Dorado". In 2002, they won the Ivor Novello Award for international achievement. Iron Maiden received a nomination from the Kerrang! Awards in the "Best Live Act" category in 2003, and were inducted into the Kerrang! Hall of Fame two years later. At the 2006 Metal Storm Awards, A Matter of Life and Death was named the best heavy metal album of the year. Iron Maiden have also received nine awards from fourteen nominations at the Metal Hammer Golden Gods Awards. Their mascot Eddie, who has previously been used by US critics to argue that Iron Maiden are Satanists, received a Golden Gods nomination in 2006, losing to singer Cristina Scabbia; but was awarded in 2008. Later in 2008, Iron Maiden were nominated in the Best Live Return category at the Vodafone Live Music Awards, to which the band disagreed with their nomination and asked to be withdrawn, stating that they were "not quite sure where we are returning from." They were replaced by the band James. The band were named "Best British Live Act" at the 2009 BRIT Awards, winning via a public poll. They were not able to attend the ceremony, ironically due to touring duties, instead delivering an acceptance message by video link-up. Their film  won, in the category "24 Beats Per Second", at the SXSW film Festival, held in Austin, Texas, in March 2009. Overall, Iron Maiden have received twenty-nine awards from thirty-nine nominations.
 Links: a. Texas b. The Wicker Man (song) c. Vodafone d. Metal Hammer
Example Output: d

Example Input: Question: Around what age was Ingmar Bergman when he rose to prominence? Passage:The famous and influential Swedish filmmaker, Ingmar Bergman, rose to prominence in the fifties. He began making films in the mid-forties, and in 1955, he made Smiles of a Summer Night, which brought him international attention. A year later, he made one of his most famous films, The Seventh Seal. In the 1960s, Bergman won the Academy Award for Best Foreign Language Film for two consecutive years, with The Virgin Spring (Jungfrukällan) in 1960 and Through a Glass Darkly (Såsom i en spegel) in 1961. He won the award again in 1983, for the early twentieth-century family drama Fanny and Alexander (Fanny och Alexander). Bergman has also been nominated for the Best Picture award once, with the 1973 Cries and Whispers (Viskningar och rop), the story of two sisters watching over their third sister's deathbed, both afraid she might die, but hoping she does. The film lost to The Sting, and oddly enough, it was not nominated in the Foreign Language Film category. It also gave Bergman the first of three nominations for Best Director. Ingmar Bergman also won four Golden Globe Awards for Best Foreign Language Film.
 Links: a. Ingmar Bergman b. The Virgin Spring c. Golden Globe Award for Best Foreign Language Film d. Smiles of a Summer Night
Example Output:
a

