10647
The assassination proved to be a pivotal moment in U.S. history because of its impact on the nation , and the ensuing political repercussions .
 location: U.S.
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: U.S. 
Answer:
 location: U.S.