instruction:
In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.
question:
Passage: In 1839, Lin Zexu, who himself was a Fuzhou native, was appointed by the Daoguang Emperor to enforce the imperial ban on the opium trade in Canton. His unsuccessful actions, however, precipitated the disastrous First Opium War with Great Britain, and Lin, who had become a scapegoat for China's failure in war, was exiled to the northwestern section of the empire. The Treaty of Nanjing (1842), which put an end to the conflict, made Fuzhou (then known to Westerners as Foochow) one of five Chinese treaty ports, and it became completely open to Western merchants and missionaries. was one of the most important Protestant mission fields in China. On January 2, 1846, the first Protestant missionary, Rev. Stephen Johnson (missionary) from ABCFM (美國公理會差會), entered the city and soon set up the first missionary station there. ABCFM was followed by the Methodist Episcopal Missionary Society that was led by Revs. M. C. White and J. D. Collins, who reached Fuzhou in early September 1847. The Church Missionary Society also arrived in the city in May 1850. These three Protestant agencies remained in Fuzhou until the communist revolution in China in the 1950s, leaving a rich heritage in Fuzhou's Protestant culture. They supported the creation of hospitals and schools, including the Woolston Memorial Hospital, run by the American-trained Hü King Eng.
 Link Information: Moses Clark White (; Pinyin: Huáidé; Foochow Romanized: Huài-dáik; July 24, 1819 – October 24, 1900) was both an American Methodist pioneer missionary in China and a physician. Answer: J. D. Collins
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Which Reverend was younger at their arrival in Fuzhou,  M. C. White or J. D. Collins?


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Passage: Born on the New Year's Day of 1966 at Khargapur in the Indian state of Madhya Pradesh, Sangita Mukhopadhyay completed her MSc with a gold medal and did her doctoral studies at the Regional Medical Research Center, Bhubaneswar which fetched her a Phd from Utkal University in 1998 for her thesis on immunoregulation in filariasis. Subsequently, she did the post-doctoral work at the National Institute of Immunology and, later, in U.S.A. at the University of Texas Health Science Center at Houston. On her return to India, she joined the Central Drug Research Institute in 1999 and after a short stint, moved to the Centre for DNA Fingerprinting and Diagnostics (CDFD). She later became the head of the Molecular Biology Group at the Laboratory of Molecular and Cellular Biology of the institute and holds the position of a Grade IV staff scientist. At her laboratory, she hosts many research scholars who are involved in the studies in the disciplines of cell signaling and signal transduction, immunity, macrophage biology and tuberculosis.
 Link Information: Its capital is Bhopal Answer: Bhopal
answer:
What is the capital city of the Indian state in which Mukhopadhyay was born?


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Passage: John H. Mercer was the third child of Harriet and John W. Mercer. He was educated at private schools in Cheltenham and, later, at Gordonstoun in Scotland. During World War II he served in the British Merchant Marines (1940–46) as a radio man. After the war he went to University of Cambridge and studied geography. At that time he came under the influence of William Vaughan Lewis. After finishing his B.A. in 1949 Mercer went to Canada, where he received his PhD in geography from McGill University in 1954. He was a Research Scholar from 1954 to 1956 at the Australian National University in Canberra, where he studied land use and population in western Samoa. He returned to Canada and worked in the Canadian Hydro-graphic Office in Ottawa as a geographer in 1957 and 1958. During 1959–60, 1961–62, 1964, and 1966, the American Geographical Society employed him at its World Data Center A for Glaciology in New York. The turning point in his career as a glaciologist was in 1960, when he became a Research Associate at The Ohio State University, in the Institute of Polar Studies (renamed the Byrd Polar Research Center). He remained at The Ohio State University until his death, becoming its first Senior Research Scientist.
 Link Information: none Answer: none
answer:

Who was the headmaster of Gordonstoun at that time?