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These have included habitat alterations and destruction of wetlands , about a hundred years of systematic persecution by humans ( from the early 1800 s to around World War II ) followed by inadvertent poisonings and epidemics of nesting failures due to various manmade chemical pesticides and organic compounds , which have threatened eagles since roughly the 1950 s and continue to be a potential concern .
 event: World War II
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: World War II 
Answer:
 event: World War II