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Science writer Timothy Ferris has posited that since galactic societies are most likely only transitory , an obvious solution is an interstellar communications network , or a type of library consisting mostly of automated systems .
 person: Timothy Ferris
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: Timothy Ferris 
Answer:
 person: Timothy Ferris