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 first to receive the award Hampton was given for his military service? Passage:James Hampton was born in 1909 in Elloree, South Carolina as one of four children to James Sr. and Sarah (Johnson) Hampton. His father, who had abandoned the family, was a gospel singer and a traveling Baptist preacher but also a known criminal who had worked on chain gangs. In 1928, Hampton moved to Washington, D.C. and shared an apartment with his older brother Lee. Hampton worked as a short-order cook until 1943 when he was drafted into the United States Army Air Forces. He served with the 385th Aviation Squadron in Texas, Hawaii, and in the jungles of Saipan and Guam. The segregated unit was noncombatant and duties included carpentry and maintenance of airstrips. Hampton built a small shrine-like object during his time in Guam which he incorporated into his larger artwork later. He was awarded the Bronze Star, honorably discharged in 1945 and returned to Washington, D.C. In 1946, Hampton was hired by the General Services Administration as a janitor and worked there until his death.
 Links: a. Chain gang b. Racial segregation c. Bronze Star Medal d. Hawaii
Example Output: c

Example Input: Question: How many matches did Nakagawa play for the Yokohama Marinos in 1996? Passage:Nakagawa was born in Osaka Prefecture on August 26, 1969. After graduating from Kokushikan University, he joined Yokohama Flügels in 1992. However he could hardly play in the match behind Atsuhiko Mori. In June 1995, he moved to rival club in Yokohama, Yokohama Marinos. In 1996, he played many matches when regular goalkeeper Yoshikatsu Kawaguchi let the club for 1996 Summer Olympics and injury. In 1998, he moved to Kyoto Purple Sanga. However he could hardly play in the match behind Shigetatsu Matsunaga. In March 2000, he moved to Nagoya Grampus Eight on loan. In 2001, he returned to Purple Sanga was relegated to J2 League. From June, he became a regular goalkeeper and the club returned to J1 League in a season. However he could hardly play in the match in 2002 season and retired end of 2002 season.
 Links: a. Atsuhiko Mori b. Football at the 1996 Summer Olympics c. Yoshikatsu Kawaguchi d. Yokohama F. Marinos
Example Output: d

Example Input: Question: What is the population of the town where Gawler established his own firm? Passage:Gawler was born in Adelaide, South Australia, to Caroline (née Philpot) and Henry Gawler. His grandfather, George Gawler, was the second Governor of South Australia. Gawler attended St Peter's College, Adelaide, and then studied law at the University of Adelaide. Gawler was called to the bar in South Australia in 1886, and left for Western Australia later that year, establishing his own firm in Perth. At one time, he was in partnership with Robert Bruce Burnside, a future Supreme Court justice. Having previously served on the Peppermint Grove Road Board for a period, Gawler was elected to parliament at a 1910 Legislative Council by-election, which had been caused by the resignation of Walter Kingsmill. He died in office in May 1915 (aged 54), of typhoid fever. He had married Eva Mary Waldeck in 1893, with whom he had four children.
 Links: a. Perth b. Shire of Peppermint Grove c. St Peter's College, Adelaide d. Typhoid fever
Example Output:
a