21513
 Paul Boyce , a spokesman for the Army , would say only that Dr. Aptaker was given an honorable discharge on June 21 after joining the Army in January and being assigned to the officer basic medical course at a training center in Fort Sam Houston in San Antonio . 
 location contains: San Antonio, Fort Sam Houston
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
 Entity Pairs:  San Antonio, Fort Sam Houston 
Answer:
 location contains: San Antonio, Fort Sam Houston