Problem: What is an overgrowth of fibrous tissue, usually produced at the site of a scar?
Answer: keloid

Problem: From which Olympic Games were Germany and Japan excluded?
Answer: london 1948

Problem: What German word refers to a 'double' of a living person, often an evil version?
Answer: doppelganger

Problem: In which sport were the Bregamasco brothers, Mirco and Mauro stalwarts for Italy?
Answer:
rugby union