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The Dudley Observatory was named for Charles E. Dudley of Albany , a former United States Senator ( 1828 – 1833 ) .
 person: Dudley; person: Charles E. Dudley; organization: Albany
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Dudley; person: Charles E. Dudley; organization: Albany