87349
E.g. Leonardo da Vinci used the camera obscura as a model of the eye , René Descartes for eye and mind and John Locke started to use the camera obscura as a metaphor of human understanding per se .
 person: Leonardo da Vinci; person: René Descartes; person: John Locke
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: Leonardo da Vinci, René Descartes, John Locke 
Answer:
 person: Leonardo da Vinci; person: René Descartes; person: John Locke