Problem: In which European city is Las Ramblas?
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A: barcelona

Problem: """There was a footpath leading across fields to New Southgate, and I used to go there alone to watch the sunset and contemplate suicide. I did not, however, commit suicide, because I wished to know more of mathematics."" Which 20th century philosopher-mathematician wrote this in his autobiography?"
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A: bertrand russell

Problem: With which part of the body is the medicinal science of orthodontics concerned?
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A: teeth

Problem: Which country was once called Upper Peru?
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A:
bolivia