Problem: Who lived on Walden Pond?
Answer: henry david thoreau

Problem: Espoo, (population 248,000) is the second largest city in which European country?
Answer: finland

Problem: An 'E coli' outbreak, said to be caused by bean sprouts, killed over 30 people in which European country in June 2011?
Answer: germany

Problem: Who wrote the novel 'The Invisible Man', published in 1897?
Answer:
h g wells