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One of the most highly cited papers published in the AJP is " Strip Integration in Radio Astronomy " by Ronald N. Bracewell ( Volume 9 , Pages 198-217 , 1956 ) , in which he first presented the projection-slice theorem widely used in medical imaging .
 person: Ronald N. Bracewell
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: Ronald N. Bracewell 
Answer:
 person: Ronald N. Bracewell