385
The son of Rear Admiral Harold Cecil Train ( 1887 1968 ) and May Philipps Train ( 1889 1980 ) he graduated from the  Georgetown Preparatory School  in 1945 and the  United States  Naval Academy in 1949 .
 country of headquarters: Georgetown Preparatory School, United States
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:
 country of headquarters: Georgetown Preparatory School, United States