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He was a visiting scholar at the Hoover Institution , and a fellow at the Woodrow Wilson International Center for Scholars and the National Air and Space Museum of the Smithsonian Institution .
 organization: Hoover Institution; organization: Woodrow Wilson International Center for Scholars; organization: Smithsonian Institution
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: Hoover Institution, Woodrow Wilson International Center for Scholars, Smithsonian Institution 
Answer:
 organization: Hoover Institution; organization: Woodrow Wilson International Center for Scholars; organization: Smithsonian Institution