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Gdzie została wynaleziona karta kredytowa?
Where was credit card invented?
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Przez kogo została odkryta penicylina?
Who was Penicilin discovered by?
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Przez kogo zostało odkryte DNA?
Who was DNA discovered by?
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Kiedy została wynaleziona lodówka?
When was refrigerator invented?
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Przez kogo została wynaleziona lodówka?
Who was refrigerator invented by?
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