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Following the start of the American Civil War , he became chief clerk and hospital visitor for the United States Sanitary Commission during 1862 – 64 , whereupon he was named professor of chemistry for the Pennsylvania State College .
 organization: Pennsylvania State College
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: Pennsylvania State College 
Answer:
 organization: Pennsylvania State College