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Dr. Michael S. Engel first studied and described the species after finding the specimen in the Department of Palaeontology collections .
 person: Michael S. Engel
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: Michael S. Engel 
Answer:
 person: Michael S. Engel