Problem: What, on an aircraft, is the 'empennage'?
Answer: tail or tail assembly

Problem: Convicted in 1987 of war crimes, who was known as the 'Butcher of Lyon'?
Answer: nikolaus klaus barbie

Problem: Which 'Lady Gaga' hit was the UK's best selling single of 2009?
Answer: poker face

Problem: Who was America's 'Public Enemy No.1' in the 1920s and 30s?
Answer:
john dillinger