Problem: What type of highly directional microphone, commonly used on television and film sets, in stadiums, and for field recording of wildlife, was invented by Fritz Sennheiser in the 1950s?
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A: shotgun

Problem: The Guarani is the principal unit of currency of which country?
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A: paraguay

Problem: Which motor car company produced the first front wheel drive car in 1934?
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A: citroen

Problem: """The Mona Lisa of the North"" or ""The Dutch Mona Lisa"" are two soubriquets for which painting by Dutch master, Jan Vermeer?"
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A:
girl with pearl earring