In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
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Question: Navy command did not know of the ship's sinking until survivors were spotted three and a half days later. At 10: 25 on 2 August, a PV-1 Ventura flown by Lieutenant Wilbur 'Chuck' Gwinn and his copilot, Lieutenant Warren Colwell, spotted the men adrift while on a routine patrol flight. Gwinn immediately dropped a life raft and radio transmitter. All air and surface units capable of rescue operations were dispatched to the scene at once.

Answer: who rescued the survivors of the uss indianapolis


Question: In biological taxonomy, a domain (Latin: regio), also superkingdom or empire, is the highest taxonomic rank of organisms in the three-domain system of taxonomy designed by Carl Woese, an American microbiologist and biophysicist. According to the Woese system, introduced in 1990, the tree of life consists of three domains: Archaea, Bacteria, and Eukarya. The first two are all prokaryotic microorganisms, or single-celled organisms whose cells have no nucleus. All life that has a nucleus and membrane-bound organelles, and multicellular organisms, is included in the Eukarya. Stefan Luketa in 2012 proposed a five 'dominion' system, adding two more to the above.

Answer: why are organisms placed into the domain of eukarya


Question: In mid-1961, President Ngo Dinh Diem of South Vietnam asked the United States to conduct aerial herbicide spraying in his country. In August of that year, the Republic of Vietnam Air Force conducted herbicide operations with American help. But Diem's request launched a policy debate in the White House and the State and Defense Departments. However, U.S. officials considered using it, pointing out that the British had already used herbicides and defoliants during the Malayan Emergency in the 1950s. In November 1961, President John F. Kennedy authorized the start of Operation Ranch Hand, the codename for the U.S. Air Force's herbicide program in Vietnam.

Answer:
when did the us start using agent orange in vietnam