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Skylark of Valeron is a science fiction novel by author Edward E. Smith , Ph.D. , the third in his Skylark series .
 person: Edward E. Smith , Ph.D.
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: Edward E. Smith , Ph.D. 
Answer:
 person: Edward E. Smith , Ph.D.