[Q]: Sentence: The Volta Laboratory became an experimental facility devoted to scientific discovery, and the very next year it improved Edison's phonograph by substituting wax for tinfoil as the recording medium and incising the recording rather than indenting it, key upgrades that Edison himself later adopted. Question: The Volta lab improved the phonograph by replacing tinfoil with what substance?
++++++++++
[A]: yes

[Q]: Sentence: After two centuries of comparative tolerance in the new nations, massive westward emigration occurred in the 19th and 20th centuries in response to pogroms in the east and the economic opportunities offered in other parts of the world. Question: What precipitated the development of the Hasidic movement?
++++++++++
[A]: no

[Q]: Sentence: In 2014 the Notre Dame student body consisted of 12,179 students, with 8,448 undergraduates, 2,138 graduate and professional and 1,593 professional (Law, M.Div., Business, M.Ed.) Question: How many students in total were at Notre Dame in 2014?
++++++++++
[A]:
yes