41928
Rock and roll has been called " blues with a backbeat " ; Carl Perkins called rockabilly " blues with a country beat " .
 person: Carl Perkins
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: Carl Perkins 
Answer:
 person: Carl Perkins