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His team was successful , with their results announced in January 1969 parallel with those from a separate team led by Bernd Gutte and Robert Bruce Merrifield at Rockefeller University who also achieved synthesis of the same enzyme using a different method .
 person: Robert Bruce Merrifield; organization: Rockefeller University
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: Robert Bruce Merrifield, Rockefeller University 
Answer:
 person: Robert Bruce Merrifield; organization: Rockefeller University