84820
Later he served as President pro tempore of the United States Senate during the 24th through 27th Congresses .
 organization: United States Senate
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: United States Senate 
Answer:
 organization: United States Senate