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Two were sent to John von Neumann at Princeton , two to Howard H. Aiken at Harvard , and one to IBM .
 person: John von Neumann; person: Howard H. Aiken; organization: IBM
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: John von Neumann, Howard H. Aiken, IBM 
Answer:
 person: John von Neumann; person: Howard H. Aiken; organization: IBM