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 In March , the two visited the Arenal Volcano during a hiking trip to Costa Rica while the twins stayed home with their father . 
 Costa Rica, Arenal Volcano
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Costa Rica, Arenal Volcano