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.

[Q]: 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.
[A]: when did the us start using agent orange in vietnam


[Q]: In 2011, Dornan appeared in nine episodes of the ABC television series Once Upon a Time, playing the role of Sheriff Graham. While Graham from Storybrooke was killed by the town's mayor Regina (The Evil Queen) in the episode 'The Heart Is a Lonely Hunter', Dornan stated that he would return as the Huntsman from the Enchanted Forest at some point, and he remained a regular on the series. He returned as The Huntsman for the season finale episode, 'A Land Without Magic'.
[A]: who plays the huntsman in once upon a time


[Q]: Enterococcus faecalis -- formerly classified as part of the group D Streptococcus system -- is a Gram-positive, commensal bacterium inhabiting the gastrointestinal tracts of humans and other mammals. Like other species in the genus Enterococcus, E. faecalis can cause life-threatening infections in humans, especially in the nosocomial (hospital) environment, where the naturally high levels of antibiotic resistance found in E. faecalis contribute to its pathogenicity. E. faecalis has been frequently found in root canal-treated teeth in prevalence values ranging from 30% to 90% of the cases. Root canal-treated teeth are about nine times more likely to harbor E. faecalis than cases of primary infections.
[A]:
where is enterococcus faecalis found in the body


