15020
 She spoke to me by cellphone after pulling off the road in icy Vermont the other day while driving to a rendezvous with her son , Casey , 27 , a National Guard medic who was due to arrive in Burlington by military aircraft from Iraq , where he had spent the last 13 months . 
 location contains: Vermont, Burlington
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:  Vermont, Burlington 
Answer:
 location contains: Vermont, Burlington