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Chen made the call after he and visiting  Marshall Islands  President  Litokwa Tomeing  planted nagi podocarp saplings on National Taiwan University's Kungkuan campus to celebrate the annual Arbor Day .
 countries of residence: Marshall Islands, Litokwa Tomeing
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:
 countries of residence: Marshall Islands, Litokwa Tomeing