9841
Douglas Fairbanks assisted with its development , and Charlie Chaplin and Joseph M. Schenck helped to promote it .
 person: Douglas Fairbanks; person: Charlie Chaplin; person: Joseph M. Schenck
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: Douglas Fairbanks, Charlie Chaplin, Joseph M. Schenck 
Answer:
 person: Douglas Fairbanks; person: Charlie Chaplin; person: Joseph M. Schenck