Problem: Which 1972 novel by Frederick Forsyth tells the story of a Peter Miller, a young German crime reporter who is attempting to find an SS concentration camp commander who had Killed his father ?
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A: odessa file

Problem: Where would halophiles be found?
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A: hypersaline lakes

Problem: Which city in Germany is famed for hosting the annual Wagner festival?
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A: bayreuth

Problem: What is the only number that equals twice the sum of its digits (digit means numerical symbol)?
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A:
18