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He had a profound impact on paleontologist Charles Doolittle Walcott and natural scientist Edward S. Morse .
 person: Charles Doolittle Walcott; person: Edward S. Morse
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: Charles Doolittle Walcott, Edward S. Morse 
Answer:
 person: Charles Doolittle Walcott; person: Edward S. Morse