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Some examples of Lyapunov times are : chaotic electrical circuits , about 1 millisecond ; weather systems , a few days ( unproven ) ; the inner solar system , 4 to 5 million years .
 person: Lyapunov
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Lyapunov 
Answer:
 person: Lyapunov