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In spite of early attempts to classify gaits based on footprints or the sound of footfalls , it was not until Eadweard Muybridge and Étienne-Jules Marey began taking rapid series of photographs that proper scientific examination of gaits could begin .
 person: Eadweard Muybridge; person: Étienne-Jules Marey
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: Eadweard Muybridge, Étienne-Jules Marey 
Answer:
 person: Eadweard Muybridge; person: Étienne-Jules Marey