Disaster at Chernobyl (USSR), Three Mile Island (USA), and Fukusima (JAPAN)
are all related to:
(a) Disaster caused by earthquake
(b) Disaster caused by Tsunami
(c) Nuclear disaster
(d) Epidemic disaster
are all related to:
(a) Disaster caused by earthquake
(b) Disaster caused by Tsunami
(c) Nuclear disaster
(d) Epidemic disaster