165355
Massie 's interest in the Imperial family was triggered by the birth of his son , Robert Kinloch Massie IV , who was born with hemophilia — a hereditary disease that also afflicted Nicholas 's son , Aleksey Nikolaevich .
 person: Massie; person: Robert Kinloch Massie IV; person: Nicholas; person: Aleksey Nikolaevich
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: Massie, Robert Kinloch Massie IV, Nicholas, Aleksey Nikolaevich 
Answer:
 person: Massie; person: Robert Kinloch Massie IV; person: Nicholas; person: Aleksey Nikolaevich