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Early activism As a student at Iowa State University in 1984 , Cosmos began teaching his ideas about nudism on street corners in Ames , Iowa City , and Des Moines , Iowa .
 organization: Iowa State University; person: Cosmos; location: Ames; location: Iowa City; location: Des Moines , Iowa
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Iowa State University, Cosmos, Ames, Iowa City, Des Moines , Iowa 
Answer:
 organization: Iowa State University; person: Cosmos; location: Ames; location: Iowa City; location: Des Moines , Iowa