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Weeks later , upon the assassination of Martin Luther King Jr. on April 4 , radio stations in 30 states pulled the song for " fanning the flames " , even though the song was a plea for racial harmony .
 person: Martin Luther King Jr.
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: Martin Luther King Jr. 
Answer:
 person: Martin Luther King Jr.