31451
He married pianist Bella Davidovich in 1950 and their son Dmitry Sitkovetsky ( who became an eminent violinist and conductor ) was born four years later .
 person: Bella Davidovich; person: Dmitry Sitkovetsky
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Bella Davidovich, Dmitry Sitkovetsky 
Answer:
 person: Bella Davidovich; person: Dmitry Sitkovetsky