3790
His maternal grandfather was well-known painter Ivan Pokhitonov ( 1850 - 1923 ) .
 person: Ivan Pokhitonov
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Ivan Pokhitonov