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He then joined the London School of Hygiene and Tropical Medicine , and took the DM in 1913 with a dissertation on the tsetse fly ( Glossina palpalis ) and sleeping sickness .
 organization: Hygiene; organization: Tropical Medicine
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: Hygiene, Tropical Medicine 
Answer:
 organization: Hygiene; organization: Tropical Medicine