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By the time of Cicero he had become " the dark " ( ; ) because he had spoken " nimis obscurē " , " too obscurely " , concerning nature and had done so deliberately in order to be misunderstood .
 person: Cicero
Please list all entity words in the text that fit the category.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} 
Answer:
 person: Cicero