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The psychotropic effects of DMT were first studied scientifically by the Hungarian chemist and psychologist Stephen Szára , who performed research with volunteers in the mid-1950 s .
 person: Stephen Szára
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: Stephen Szára 
Answer:
 person: Stephen Szára