71370
Contributory factors included his early separation from his mother for boarding school followed by his mother 's early death ; the death of his close friend and colleague Nikolai Rubinstein ; and the collapse of the one enduring relationship of his adult life , his 13-year association with the wealthy widow Nadezhda von Meck , who was his patron even though they never actually met each other .
 person: Nikolai Rubinstein; person: Nadezhda von Meck
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: Nikolai Rubinstein, Nadezhda von Meck 
Answer:
 person: Nikolai Rubinstein; person: Nadezhda von Meck