Problem: Given the question: Determine the topic of the question-answer pair. Question: "what was the date of pearl harbor?"; Answer: "The attack on Pearl Harbor (called Hawaii Operation or Operation AI by the Japanese Imperial General Headquarters (Operation Z in planning) and the Battle of Pearl Harbor) was a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor , Hawaii, on the morning of December 7, 1941 (December 8 in Japan)."? Topic:
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The answer is:
Attack on Pearl Harbor

input question: Determine the topic of the question-answer pair. Question: "how did anne frank die?"; Answer: "Anne Frank and her sister, Margot , were eventually transferred to the Bergen-Belsen concentration camp , where they died of typhus in March 1945."? Topic:???
output answer: Anne Frank

Determine the topic of the question-answer pair. Question: "what school did oprah winfrey help?"; Answer: "The Oprah Winfrey Leadership Academy for Girls - South Africa is a female boarding school founded in January 2007 and located in Henley on Klip near Meyerton , south of Johannesburg , South Africa ."? Topic:
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Answer: Oprah Winfrey Leadership Academy for Girls

Q: Determine the topic of the question-answer pair. Question: "what is vitamin a for?"; Answer: "Vitamin A is needed by the retina of the eye in the form of retinal , which combines with protein opsin to form rhodopsin the light-absorbing molecule , that is necessary for both low-light ( scotopic vision) and color vision ."? Topic:
A: Vitamin A

Question: Determine the topic of the question-answer pair. Question: "who is the junior senator of nc?"; Answer: "Janet Kay Ruthven Hagan (; born May 26, 1953) is the junior United States Senator from North Carolina , in office since January 2009."? Topic:
Answer: Kay Hagan

Please answer this: Determine the topic of the question-answer pair. Question: "what is the difference between multistage and cluster sampling?"; Answer: "Cluster sampling is a sampling technique used when "natural" but relatively homogeneous groupings are evident in a statistical population ."? Topic:
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Answer:
Cluster sampling