Problem: Given the question: Percival Lowell established the observatory after what American astronomer that discovered Pluto in 1930?
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The answer is:
Clyde Tombaugh

Problem: Given the question: Georges Ladoux was famous for recruiting which exotic dancer as a French spy?
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The answer is:
Mata Hari

Problem: Given the question: Who is the full-sister to the retired American Thoroughbred racehorse that was raised by a race horse trainer born July 9, 1941?
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The answer is:
Quest to Peak