23978
 The new $ 25 option for same-day travel changes is only allowed on flights in the United States , Puerto Rico , the United States Virgin Islands and to the Caribbean , and it 's similar to options offered by Northwest and Delta . 
 location contains: Caribbean, Puerto Rico
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: 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} 
Answer:
 location contains: Caribbean, Puerto Rico