Problem: In 1692, on the orders of William III, nearly 80 members of which Scottish clan were massacred at Glen Coe?
Answer: macdonald

Problem: Which country's flag is a plain green rectangle?
Answer: libya

Problem: "Graffitied and repainted often since 1980, and obliterated in 2014 except from the ironic statement ""Wall is over"", the 'Freedom Wall' in Prague celebrates whose memory?"
Answer: john lennon

Problem: "Shakespeare's ""King Lear"" is set in which country?"
Answer:
england