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The nineteenth century naturalists Félix de Azara and William Henry Hudson thought that attacks on people , even children or sleeping adults , did not happen .
 person: Félix de Azara; person: William Henry Hudson
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: Félix de Azara, William Henry Hudson 
Answer:
 person: Félix de Azara; person: William Henry Hudson