790
Sentara Norfolk General Hospital  part of the Hampton Roads based Sentara Health System and a teaching institution of  Eastern Virginia Medical School  was the site of the first successful in-vitro fertilization birth .
 subsidiaries: Sentara Norfolk General Hospital, Eastern Virginia Medical School
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 subsidiaries: Sentara Norfolk General Hospital, Eastern Virginia Medical School