question: What is the answer: 'Roaring' refers to what pluralised number in describing a 1900s decade of western world prosperity?
answer: twenty

question: What is the answer: What is the capital city of Estonia?
answer: tallin

question: What is the answer: Which European capital city is on the River Tagus?
answer: lisbon

question: What is the answer: What is collected by bees?
answer:
nectar