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Early thinkers such as John Locke , Jean-Jacques Rousseau and Adam Smith saw humankind beginning in the state of nature , then finding meaning for existence through labor and property , and using social contracts to create an environment that supports those efforts .
 person: John Locke; person: Jean-Jacques Rousseau; person: Adam Smith
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: John Locke, Jean-Jacques Rousseau, Adam Smith 
Answer:
 person: John Locke; person: Jean-Jacques Rousseau; person: Adam Smith